HUD Seal

[1261Truckie]

I was watching the Gettin' Salty podcast with Capt Graham of L-102 and he said he was struck be a HUD Seal at a job and severely injured. I've been away from FDNY for a while so, what is a HUD Seal?
Thanks for any info

 

[turk132]

WNYF 2/93

 

[1261Truckie]

Thanks Turk