Nobody said he killed your allies !
Speer was there, in mufti, disguised with a full beard and Afghani clothes, to blend in. He was a Special Forces soldier, qualified  as a medic, but still carrying arms and ammo.
The USAF dropped several 500-Lb bombs on the compound and strafed it with helicopter gunships and the Spectre C-130 gunship. When Speer we at in to check out the compound, he thought everyone was dead, but someone threw a grenade over the wall and the explosion killed him. No one saw Khadr throwing a grenade, which he would not normally have had and he was shot in the back several times and lost an eye to shrapnel! Would have been next to impossible for him to find and hurl a grenade, when he was already almost dead on the ground and was covered in rubble.