These days material for video and audio recordings can come from almost anywhere.

Police body cameras provided an unusual behind-the-scenes glimpse of the construction crew just after a disastrous accident at a Fort Lauderdale, Fla., high-rise project earlier this year, in video released by city police.

Ryan Haynes, 37, was killed last October when a mobile crane on a road project toppled and its boom struck him. 

One worker was killed and another injured after a mobile crane working on a highway project toppled Oct. 3 near Orlando while placing concrete panels for a noise wall. 

Seeing parallels to a fatal crane accident in Texas in 2012, crane specialist Terry McGettigan believes the Seattle crane collapse will be shown to have similar causes.

In an analysis of three cranes that collapsed in the Miami area as Hurricane Irma passed over Florida, OSHA found that while the cranes were set to spin freely in the wind, all three were a specific model whose jibs may have been vulnerable to turbulent wind vortexes.

Crane accidents are one of the enduring nightmares of construction work, so it is notable that as an industry where regulation often equals costs and entanglements, construction professionals have joined together to support the long-awaited publication date of a new federal safety rule that would make certifying crane operators mandatory.