Corresponding sides are a pair of matching sides in two different shapes (size does not matter). In the field of geometry, the concept of corresponding sides plays an important role to prove various triangular theorems.
The Boeing B-17 Flying Fortress is a four-engine heavy bomber aircraft developed in the 1930s for the United States Army Air Corps (USAAC).
Flying machine: A B-17 bomber makes its way to England to aid the British in World War II circa 1941. Pep talk: Before taking off on a mission in 1944 a Flying Fortress crew in England receives a talk from 26-year-old Chaplain James O. Kincannon, a Van Bueren, Arkansas, minister affectionately known as 'Chaplain Jim'.