Why Did Lockheed Martin Build The C-5 Galaxy With A T-Tail?

Here's why Lockheed did this. The contest that eventually created the C-5 Galaxy was formally initiated in 1964 as the CX-HLS ...
Business Insider

After 55 years in flight, the US Air Force is planning to keep its biggest plane in action for a few more decades

Since 1970, the US Air Force's C-5 cargo planes have carried troops and gear all over the world. The C-5 is the Air Force's biggest plane, and the latest model can haul 281,000 pounds and fly 518 mph.