file formation

File

file

Lockstep-single file with the right hand on the shoulder of the man in front. Mainly in US prisons, especially chain gangs where the ankles were linked by a short chain.

Formations of airplanes. They might form a "line abreast" (a line of planes left to right/right to left); or a "V" shaped formation, or a single file formation, or an echelon formation (a line that is at an angle). Each formation is one attack wave; follow on waves will be directly behind them, in the same type of formation. The purpose of these formations is for command and control. Precision hitting of targets demand precision flying.