Marines with Marine Air Control Squadron 2 Detachments "A" account for gear at the end of an evening of Marine Air Traffic Control Mobile Team training. The training helps Marines perfect the skills necessary to set up temporary airfields in unforgiving environments. - Marines with Marine Air Control Squadron 2 Detachments "A" account for gear at the end of an evening of Marine Air Traffic Control Mobile Team training. The training helps Marines perfect the skills necessary to set up temporary airfields in unforgiving environments.