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Sean F. Mangan

Sean F. Mangan

Top Attorney for Military Personnel and Families
  • Military Law, Criminal Law, Gov & Administrative Law ...
  • Ct. of Appeals for the Armed Forces, Oregon, UCMJ / Military Justice System, Washington
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Client Reviews
V. S. August 30, 2022
I wish I could give him 10 Stars If you are reading this, congratulations. Your search for attorneys is over. Stop and CALL SEAN RIGHT NOW. This is a very competent, intelligent, knowledgeable, compassionate, and caring attorney. If he takes your case, he will deliver superior advocacy and will not back down until you get the best outcome humanly possible within the circumstances of your situation. And I say call him now, because his prowess has not gone unnoticed. There will inevitably come a time (even if it is temporary) where he doesn’t have the bandwidth for new clients simply because there are only 24 hours in a day. I don’t want that to happen to you and for you to miss out on this attorney. Whatever your specific legal circumstances, (if you’re reading this), you need someone with his skillsets and experience defending you. Okay that being said, here is a bit more about my situation. I have been dealing with a challenging and multifaceted legal matter for nearly the past 3 years. I was facing a 15-6, criminal investigation, and a complicated medical issue that lay at the root of all my legal troubles. Over that time, I interviewed at least 15 attorneys. I even hired 3 before I landed on Sean. All of my prior counsels had their strong points and were superior attorneys, skilled at their craft. But my gut just told me that they weren’t the right people for my case. While every case is unique, almost every legal issue can fall into a certain category/ box. Mine truly couldn’t, because it differed from 99% of legal matters. I needed a lawyer who didn’t just follow a cookie cutter approach. I needed someone who was a nuanced, critical thinker with strong instincts and an adaptable and proactive approach. Someone who was forward thinking. It wasn’t until Sean took my case that I finally started sleeping at night. And I haven’t looked back. He gave me an exceptional outcome that I didn’t dream possible because no other attorney I spoke to believed I had a shot. But Sean listened and we stayed the course together until WE WON. He is honest, empathetic, a great listener, and (most importantly), he understands the system. He knows how it works. He knows how to interact with your Command and with the military’s prosecutors. He is a bulldog when it comes to defending you. I was amazed how my Command didn’t even bother responding to my prior attorneys, but then suddenly started becoming responsive as soon as Sean got involved. They knew that they were dealing with a formidable adversary. Sean will make you feel protected as he puts your opponents on the run in a way that only he knows how to do. But he also has the charisma and interpersonal skills to negotiate when the time is right. You see, the military’s legal system may feel like a giant, unhuman behemoth to you, but it is personality driven. A skilled attorney knows how to navigate those personalities. Sean will give them a tactical victory to soothe their egos if it means that the strategic victory will be yours in the long run. He is also PROACTIVE rather than reactive. Many attorneys will tell you just to “lie low” and wait for bad things to happen to you so they can respond/ rebut and bill you for their time. Meanwhile, you are stressing out and feeling powerless. In contrast, Sean will actually GET AHEAD of things and get your case resolved before it snowballs into a disaster. That is what he did for me. Your time is valuable and you have decisions to make. I leave you by wishing you the best of luck in your search for attorneys and repeat my advice to- CALL SEAN RIGHT NOW. Even if you don’t hire him, he will answer your questions and provide you invaluable advice to assist you going forward (for free). If you do hire him, it will be one of the best decisions you ever made.
M. E. August 25, 2022
Excellent attorney with military experience LTC Sean Mangan, USA, Retired, holds a wealth of knowledge from his experience in military law enforcement as well as his time as an Army JAG officer. As a Reserve Soldier myself, a matter came up that I thought may have had military implications so LTC Mangan was quick to respond and give me his advice over the phone. Once I retained him, he was always super responsive and helped not only ease my concern, but also stood beside me and helped me clear up my issue. Sean is still very responsive, even to this day, although the case has been closed and it's been well over a year. I highly recommend LTC Sean Mangan not only for members of the military but for anyone who needs someone to interceed legally on their behalf. He won't let you down!
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Biography

Unmatched Experience. For 30 years I've worked criminal cases, on the streets and in the courtroom, civilian and military, and at local, state, and federal levels. I've been a law enforcement officer, Soldier, prosecutor, defense counsel, magistrate, appellate counsel, law professor, and judge. As a retired Army JAG Lieutenant Colonel, with prior MP and Special Operations experience, I bring a superior range of skills, knowledge, and abilities to serve you.

My services are reserved for those who serve our country and communities: military personnel, veterans, first responders, and their families. If everything you've built and worked so hard to achieve is at risk, don't take chances. Your service deserves the best defense.

Learn more about me at:
www.defendyourservice.com (and)
www.ucmj-defender.com/sean-mangan

I am also proud to be affiliated with the Law Office of Jocelyn C. Stewart.

We are ready to fight for you.

Practice Areas
    Military Law
    Criminal Law
    Criminal Appeals, Drug Crimes, Fraud, Gun Crimes, Internet Crimes, Sex Crimes, Theft, Violent Crimes
    Gov & Administrative Law
    Administrative Law
    Employment Law
    Employment Discrimination, Sexual Harassment, Whistleblower, Wrongful Termination
    White Collar Crime
    Domestic Violence
    Domestic Violence Criminal Defense, Domestic Violence Restraining Orders, Victims Rights
    DUI & DWI
    Family Law
    Restraining Orders
Additional Practice Area
  • Military Justice and Adverse Actions (all services)
Video Conferencing
  • FaceTime
  • Zoom
  • Microsoft Teams
Fees
  • Free Consultation
    Free confidential legal consultation available, to be scheduled upon request.
  • Credit Cards Accepted
  • Rates, Retainers and Additional Information
    Primarily flat fees to give clients clarity and control. Only current action/phase is billed. Billing handled through LawPay, with electronic invoice & secure link sent directly to client.
Jurisdictions Admitted to Practice
Ct. of Appeals for the Armed Forces
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Oregon
Oregon State Bar
ID Number: (Currently Inactive Member)
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UCMJ / Military Justice System
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Washington
Washington State Bar Association
ID Number: 55286
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Army Court of Criminal Appeals
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U.S. Supreme Court
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Languages
  • English
Professional Experience
Legal Counsel
Independent
- Current
Private Legal Counsel, available to represent military personnel and their families. 100+ clients served to date
Criminal Law Policy Attorney
US Army
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Senior Policy Attorney for Criminal Law Division, Office of the Judge Advocate General, Headquarters, U.S. Army. Involved in edits of Manual for Courts-Martial and the rewrite of Army criminal law regulation (AR 27-10). Advised on issues of criminal law and corrective-action policies for senior Army leadership.
Trial Judge
US Army
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Military Judge, U.S. Army Trial Judiciary. Handled the full range of offenses, legal issues, and hearings in military justice trials, including presiding as judge-alone court and sentencing authority.
Regional Defense Counsel
US Army
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Senior and supervising defense counsel for Southwest Continental United States (SW-CONUS). Led and managed 30 defense counsel (and their support staffs) responsible for all military justice matters in SW-CONUS, approximately 25% of all Army courts-martial trials.
Professor of Criminal Law
TJAGLCS (DOD)
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Faculty at the DOD's only ABA-Accredited / LLM-granting law school: The Judge Advocate General's Legal Center and School (TJAGLCS). Taught the full range of topics in criminal law and procedure to a variety of resident and non-resident courses, with students ranging from newly-commissioned military attorneys to military judges.
Special Operations Legal Counsel (Deployed)
DOD/Joint Task Force
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Led a Joint/Multinational Team of Intel Agents, Law Enforcement Agents, Attorneys, Paralegals, and Iraqi Legal Personnel in direct support to Tier-1 US SOF Task Force, warranting and prosecuting high-value terrorism suspects in foreign courts.
LLM Candidate
US Army
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LLM in Military Law, with Special Certificate in Criminal Law and Military Justice
Supervising Appellate Counsel
US Army
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Supervised a Branch of 8 Appellate Attorneys in the Defense Appellate Division, US Army Legal Legal Services Agency
Appellate Counsel
US Army
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Appellate Defense Counsel, US Army Legal Services Agency. Appealed court-martial convictions and legal issues to the Army Court of Criminal Appeals, Court of Appeals for the Armed Forces, and Supreme Court of the United States.
Chief of Military Justice
US Army
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Senior and Supervising Prosecutor for JRTC & Fort Polk, LA. 50 courts-martial and 300+ adverse legal actions per year.
Special Assistant United States Attorney
DOJ
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Chief of Administrative Law
US Army
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Senior and Supervising Counsel for all admin/civil legal issues on JRTC & Fort Polk: ethics, employment, environmental, contract, admin investigations, etc.
Military Magistrate
US Army
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Part-time military magistrate: issued warrants, reviewed and approved pretrial confinement
Administrative Law Attorney
US Army
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Handled the full range of government administrative law issues
Intern Prosecutor
Lane County Prosecutor's Office
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Solo-tried multiple criminal cases, assisted on major felony cases
Intern Prosecutor
US Army
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While in law school, assisted during summer months at the Fort Lewis (JBLM) Military Justice Shop, prepping cases and leveraging my law enforcement experience to aid in criminal prosecutions.
Officer
US Army Military Police
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Commissioned Officer of US Army MP Corps. Served in both law enforcement and tactical roles, in both action and leadership positions. Later served in support of Army Prosecutor offices in case-support role, prior to becoming a licensed attorney and Army Judge Advocate.
Education
Army Command & General Staff College
ILE-CC (2011) | Leadership
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Intermediate Leadership - Core Curriculum (Fort Lee Campus)
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TJAGLCS
LL.M. (2009) | Military Law, Criminal Law Cert.
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University of Oregon School of Law
J.D. (2003) | Law, Criminal Law Specialty Cert.
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Honors: Superior Advocate, Mock Trial
University of Oregon School of Law Logo
Gonzaga University
B.A. (1996) | Sociology & Philosophy
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Honors: Cum Laude
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Awards
Bronze Star Medal
DOD
Superior Advocate Award - Mock Trial
University of Oregon School of Law
Professional Associations
Washington Defenders Association
Member
- Current
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International Association of Military Criminal Defense Lawyers
Member
- Current
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Washington State Bar Association
Member
- Current
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Oregon State Bar  # 035465
Member
- Current
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American Bar Association
Member
- Current
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Publications
Articles & Publications
Army Regulation 27-10 (current edition)
US Army
Crimes and Defenses Deskbook
TJAGLCS-ADC
Speaking Engagements
Military Justice Overview & Update, Seattle, Wa
Washington Bar Association - Military Law Section (LAMP)
Certifications
UCMJ Article 27B
DOD - Practice in Courts-Martial for all Services of the US Armed Forces
Websites & Blogs
Website
Mangan Law - Main Page
Legal Answers
2 Questions Answered
Q. If I am a former prisoner at a military correctional facility am I allowed to contact other former inmates?
A: It depends on the conditions of your release. For service members who served a longer sentence (those over 10 years and usually those over 20) there is the possibility of early release through a parole system. When released, those individuals may carry similar conditions on release that limit who they have contact with. If you served your sentence fully and was released, then normally there is no prohibition on who you contact with. (However, there may be other orders/authorities from the military or other jurisdictions, depending on your case, that could impact you.)
Q. Does only the judge have to sign a temporary custody agreement due to military deployment (this is after he deployed)
A: A custody agreement may be formed between parties without the involvement of a court, but it carries no enforcement mechanism if a court is not involved. When co-parents are getting along, these are routinely formed without a court's involvement. In some cases the agreement is entered as a court-filing and then approved by the judge, which gives it force of law. Your situation seems to involve a non-amicable relationship, and a out-of-court agreement is unlikely, and even if one were to be formed it would lack enforcement. As for the military deployment angle, the Servicemember Civil Relief Act gives some protections when a deployed service member is able to respond to an action, but that would turn on the specifics of the situation.
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Contact & Map
Mangan Law
The Law Offices of Sean F. Mangan, PLLC
10661 Old Frontier Road NW, Suite 211
Silverdale, WA 98383
Telephone: (360) 908-2203
Monday: Open 24 hours
Tuesday: Open 24 hours
Wednesday: Open 24 hours (Today)
Thursday: Open 24 hours
Friday: Open 24 hours
Saturday: Open 24 hours
Sunday: Open 24 hours
Notice: By appointment only. This map reflects actual locations where we have represented clients. Our firm understands the duty hours that affect our military and first responder clients. We can arrange to meet or speak with you at any time.
JBLM, WA, USA
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JBER, AK, USA
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Fort Campbell, KY, USA
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Fort Bragg, NC, USA
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Fort Carson, CO, USA
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Fort Benning, GA, USA
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Washington Naval Yard, DC, USA
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Naval Base Kitsap, WA, USA
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Naval Base Norfolk, VA, USA
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Fairchild AFB, WA, USA
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