I work two 16 hour shifts a week on my department. It can get rough..
At the end of the day this is a tragedy from any standpoint. The mind can do some funny things to you when exhausted and being at a level 10 level of constant alertness for 16 hours after having slept for only 4 hours the night before. I've had partners crash their personal vehicles on the drive home after a few days of hard work and very long hours mixed with sleep deprivation.
I'm glad they never shot their neighbor.