unarmored vehicles when this attack by around 50 isis fighters began, although that's not 100%. there was some conflicting reporting that maybe they weren't even in their vehicles yet, you know, contributing to the risk of casualties. at any rate, that's something that the investigation is obviously working on. there's also a question over when la david johnson was somehow separated from his fellow troops and find about 48 hours later about a mile away, was there a sort of tracking signal coming from him, might that, though, have been coming from a vehicle instead? so there are questions over what exactly happened and what was the situation on the ground, but then bigger questions over how it happened in the first place. questions about the intel and the coordination among u.s.