Atomic Annie. 15 Kilotons of Burnin' Love from America

One of the coolest nuclear delivery devices. Very low yields. The streams of white beside the main detonation are rockets that are launched a few moments prior, to measure the blast yield and radius.

[jeffsims]

I've watched this footage many times and always wondered what the tiny, vertical shards of smoke that procede the actual blast were. I've seen them in almost every video of nuclear explosions.