Trial Services
Marine Corps Air Station Yuma
Yuma, Arizona

The mission of the Trial Service Office is to provide legal advice and support to all MCAS Yuma tenant commands in the prosecution of Marines and sailors in general, special and summary courts-martial. 

The Trial Service Office provides legal services and advice in matters involving criminal violations of the Uniform Code of Military Justice to the commands aboard MCAS Yuma. 

Senior Trial Counsel: Maj. Joseph S. High

Trial Counsel: Capt. Benjamin R. Tylka 

Trial Counsel: Capt. Matthew D. Sherman 

Trial Services Chief: SSgt Blake A. Morris

Trial Services Clerks: Cpl. Daniel A. Barrera

                                  Cpl. Dimitri H. Laurent

                                  Cpl. Srihari P. Gattupalli 


- Process Requests for Legal Services from tenant commands. 
- Represent the Government
in all courts-martial proceedings. 
- Provide advice to commanding officers regarding criminal investigations. 
- Provide recommendations to commanding officers for appropriate disposition of criminal offenses committed by Marines or Sailors. 
- Conduct military justice training for commanding officers, executive officers and unit legal officers as requested 


Request for Legal Services (RLS)

Manual for Courts-Martial (MCM 2019 ed.)

MCAS Yuma Victim and Witness Assistance Program

Trial Services 2891

Defense Services
Mon - Fri 0730 - 1630
Bldg 852 West Wing 

Legal Services Support Detachment Yuma
PO Box 99126
Yuma, AZ


Marine Corps Air Station Yuma