The Army’s MOS 91S is a Stryker Systems Maintainer. They work as part of a team to maintain the Stryker family of vehicles. These vehicles are used for transportation of troops and evacuation of injured personnel.
MOS 91S responsibilities include:
Maintaining hazmat, TMDE, unscheduled services, and quality control
Serving as a wheeled vehicle mechanic and squad leader on a combat repair team
Maintaining organizational and direct support maintenance for 74 Strykers and 40 wheeled vehicles
Some of the Stryker vehicles include:
M1128 Mobile Gun System
M1132 Engineer Support Vehicle
M1133 Medical Evacuation Vehicle
M1135 NBC Recon Vehicle
The Army’s missions depend on the reliability of the Stryker vehicles.