from wiki:
In September 1987, a B-1B (84-0052) from the
96th Bomb Wing, 338th Bomb Squadron,
Dyess AFB crashed near
La Junta, Colorado, while flying on a low-level training route...
The root cause of the accident was thought to be a
bird strike on a wing's leading edge during the low-level flight. The impact was severe enough to sever the fuel and hydraulic lines running along the forward spar that served that side of the aircraft, whereas the other side and its two engines functioned long enough to enable the three crew members to eject. The B-1B fleet was later modified to protect the various supply lines, which lie along the edge.
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