In my time in EMS in Maryland, I worked with the Trooper crews often. Still trying to find out who the crew members were - there's a good chance I knew some or all of them. Everyone in the public safety community in the state knew well the "flying vacuum" sound of the Dauphin helicopters MSP operates.
These folks were truly heroes, placing themselves in harm's way on a daily (even hourly) basis to help others. Trooper 2 was at one time the busiest medevac unit in the US, and there is no way to count the number of lives they saved.
Trooper 2 in happier times:
May God bless the crew and patient lost in this tragic incident, and may He bring peace to their families and colleagues.
Matt