crewc 12/26/2017 fl***********@***oo.com" data-headline="crewc" data-description="SSgt Sedlak stand aside A-10C #693, the aircraft he currently maintains as Crew Chief. 15th WG, 104th FS of the Maryland Air National Guard." /> SSgt Sedlak stand aside A-10C #693, the aircraft he currently maintains as Crew Chief. 15th WG, 104th FS of the Maryland Air National Guard.