1.   His wings fell to his side, and his primary feathers reached out to the ground.

2.   He said he saw one wing fall and hit the ground, followed moments later by the other wing.

3.   Rescue workers pressed on, bolstered by their few successes, though they knew the lone remaining wall and the other wing could fall at any time.

4.   They pressed on, though they knew the lone remaining wall and the other wing could fall at any time.