it means they don't have a clue what happened yet
i see pushing his books and website has paid off
that's what you think all this is about? you should go read up on OSINT and then you might understand what this operation is.
yeah that was a non lethal concussion grenade similar to the ones used in training. actual grenades generally have a 75 meter kill radius.
oh i'm not saying they can't be i'm just saying a lot of those people would have been really fucked up if it was a fragment grenade