US&R
US&R means urban search and rescue, the process of searching for, extricating, and providing for the immediate medical stabilization of victims who are entrapped in collapsed structures.
Source
44 CFR § 208.2
Scoping language
General. Any capitalized word in this part is a defined term unless such capitalization results from the application of standard capitalization or style rules for Federal regulations. The following definitions have general applicability throughout this part: