hotwash

Etymology
. Some sources say this refers to the practice by some soldiers of dousing their weapons in extremely hot water as a means of removing grit and residue after firing. Others interpret "hot" as referring to immediacy (not temperature), and "wash" to be used metaphorically (compare come out in the wash).

Noun

 * 1) Discussions and evaluations of an agency's (or multiple agencies') performance following an exercise, training session, or major event.

Usage notes
This term originated in the military, and was later adopted more widely.