was it a Tesla bus?
It's to keep people from showing up on scenes, taking photos and/or interfering with operations. Yes it does happen. How many times in the past year alone have fire apparatus or medic units been stolen off scenes? How about medical gear stolen from these same units while the crews are tending to the patient? A lot more than many realize. a neighboring fire department to the one I worked for had their Drug/medication bags stolen from units 3 times, once while the ambulance was parked at the hospital. Just because they want to go dark doesn't mean there is anything nefarious about it.
No that's crazy Kate