On Monday, March 4, Arrowhead Regional Medical Center (ARMC) in San Bernardino, California was one of two local medical centers to participate in a mass casualty drill.
The objective of the drill for ARMC was to test the hospital’s ability to respond effectively to a surge of patients resulting from a mass casualty incident. Throughout the exercise, ARMC staff demonstrated their proficiency in triage, patient care, communication and coordination of resources. The drill also provided an opportunity for staff to practice protocols for receiving patients, managing supplies and implementing surge capacity plans.
From https://main.sbcounty.gov/2024/03/07/arrowhead-regional-medical-center-participates-in-mass-casualty-incident-drill/.
It’s always good to conduct mass shooting drills in case they are needed in the future.
Or, in the case of Arrowhead Regional Medical Center, in the past.

At least 14 people were dead and another 17 injured in a shooting Wednesday in San Bernardino, California, when gunmen who were heavily armed and “on a mission” opened fire during a function at a center for people with developmental disabilities, police said.
Police believe two alleged shooters — a county employee and a woman with whom he was in a relationship opened fire around 11 a.m. at the Inland Regional Center. They were armed with assault weapons and “prepared to do what they did as if they were on a mission,” San Bernardino Police Chief Jarrod Burguan said….
Five people were taken to the nearby Loma Linda University Medical Center, two of which were critical but stable, two of which were fair and the one who was still being assessed, according to a hospital spokeswoman. Six other people are being treated at Arrowhead Regional Medical Center, though their conditions are unknown.
From https://abcnews.go.com/US/police-respond-reports-active-shooter-san-bernardino/story?id=35535995.
Although it wasn’t mentioned in San Bernardino County’s 2024 description of the drill, I’m sure some participants remembered what happened nine years ago.
