The B-17 .
The B17, B24, and B29s were the heavy bombers of WWII. The B52 was the heavy bomber of the Vietnam War.
18
The plane was called a B-17 Flying fortress.
It was the Flying Fortress, dubbed so by a Seattle journalist and later adopted as the official name.
The B-17 .
All throughout WWII.
B16 and B17 bolts are specially designed bolts used by boilermakers. These bolts are used in high temperature service areas of the boiler.
Boeing B17
The B17, B24, and B29s were the heavy bombers of WWII. The B52 was the heavy bomber of the Vietnam War.
1 h 21 min (104.1 km) via B17 and B17
B17 is a relative reference. $B$17 is an absolute reference. See the related question below.
Yes they do Many types of berries contain vitamin B17, such as strawberries, blueberries, huckleberries and cranberries. HealthCentreForce states that a serving of blackberries, gooseberries, boysenberries, raspberries or elderberries can provide 500mg of vitamin B17.
Europe
The B52 Stratofortess. During the Vietnam War, one B52 could carry up to 108 750lb HE bombs. That was equal to about 10 World War 2 B17 bombers.
B17 is a relative reference. $B$17 is an absolute reference. See the related question below.
James W Fore