How US military planes created giant smoke curtains in 1920s

Name: How US military planes created giant smoke curtains in 1920s
Uploaded: 2020-10-06T21:30:21+00:00
Duration: P56S
Description: Watch a plane unveil a half-a-mile smoke curtain within seconds.

Credit: Geo Beats

Duration: 00:56s 06 Oct 2020 0 shares 1 views