related tags: 1stbattalion 574C40 624C34 8C7359 9D8A70 9thmarineregiment A5743F B2B1B0 B3B1AF B48D5A C4BDB6 CBBDB0 af afghannationalarmy afghannationalsecurityforces bravocompany improvisedexplosivedevice insurgent operationcrackback peace security treknawahelmandprovince