A phrase featured in David Brin
's Startide Rising
, the second book of the Uplift series
. It describes a phenomenom among sentient dolphins
; where they react to another's injury by evolutionarily reverting, and engaging in clearly dangerous behavior en masse
during a rescue
I don't know if Brin coined this term or not, but it is also used (by the CDC)to describe a physiologic state that human beings are susceptible to in high-stress rescue missions, and which causes them to place themselves in a hazardous situation to render aid.
see for example: http://www.cdc.gov/niosh/face/stateface/ak/98-AK-016.html