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by bigfatkitten 609 days ago
B-52s are basically ships of Theseus at this point. About the only original part left by the time they're retired will be the build plate with the serial number on it.

Firefighting is uniquely hard on airframes. It imposes all sorts of loads on aircraft that they just don't experience in "normal" operation. For maintenance purposes, one well-known (V)LAT operator I'm familiar with treats one hour of firefighting ops as 7 hours of flight time.