In response to the above comments:
1) if you mean by "takes a shot", that he got shot, then you're correct. Doesn't appear the officer fired. His flinch back was due to taking fire.
2) the guy clearly "took it on the chin" (vest) and stayed at his position.
3) his position was burned the moment the suspect exited the structure, and he challenged. Other than a total retreat, holding his perimeter position with the marginal cover he had looks like it may have been the least bad option.
4) I don't think the concept of "pieing" as it's been discussed in this thread, as a viable searching or clearing technique, applies at all in this context. He's holding a perimeter position, and attempting to use the only available 'cover' afforded by that corner, and still maintain observation of that door.
As for @
snow whites comment about forcing the forward officer off of cover.....yeah, less that ideal positioning. But the shot that finally took out that officer came significantly after the officers had both repositioned behind cover.