I am a DC resident and my wife works at this hospital, the Washington Hospital Center (WHC). These people are trained by the DC Police and are classified as police. My wife tells me that they are horrible at their jobs. She says that when they are called to help restrain a patient (You have to restrain patients that are hooked up to machines and are severely injured because they can hurt themselves and they are not in there right minds because of drugs or their condition) they offer little to no help.
At the same time they are dealing with some of the worst people in very fragile emotional states because they are either: -Mentally unstable because of drugs both legal and illegal (PCP is real big in the area), senility, etc. -The patient's family members are emotionally unstable because they are losing or just lost a loved one, or illegal drugs, or they are just shit people She told me that one time after a woman died in her unit (natural causes, she was old and had used hard drugs her entire life) her children, of which she had many due to several different fathers, began to fight over her dead body, they were shitty people except for one or two of them. There were more people than there should have been allowed in the room (she had lots of kids and they were allowed to be with her in her last minutes) so probably like 7-8. The were moved from the unit to the hallway where the security police began interacting with the daughters and sons of this woman as well as the rest of their family/friends (seemed to be ~30 people). Security only escalated the situation through shit talk and things got even worse and soon a full scale brawl broke out and the nurses, admin, etc. on the floor closed their doors and barricaded them (I can't remember if they barricaded or not but I know they can't lock the doors on her particular unit, which they should be able to do). The last thing she saw was these 2-3 security officers being swallowed up by the mob of angry shitty people.

TL;DR Wife works at WHC as a nurse says that security officers there need more training because they have to deal with emotionally fragile people, very shitty people, and very shitty people who are emotionally fragile.