Good questions. If I had to guess, covid related maintenance (and bad judgement calls on worn out gear based on supply of replacement parts) and stressed out crew.
Many in this country are just damned stressed and out on the verge of snapping.
Very plausible. And probable. Society's not the same anymore. Been running into a lot of glum people lately, frowny faces everywhere. LE in my county has been responding to a lot of disturbance & fight calls. Lots of drinking up and drugging out going on.