If al-Qaeda can pose as Afghan soldiers to kill Americans, so can't Palestinian Militants pose as news people. Imagine the headlines then? "Two Soldiers Slain-Gaza Rejoices. Celebrations galore. Strip them down and don't take any chances. As for the rest, it's a case he says she says, for now.
Second, never point a gun, toy or not, at a border guard or policeman or you will end up dead. Looks like suicide by IDF to me or just a dummy.