A real alarm happening right after a fire drill.

There was this time in elementary school when strangely enough right after the school did a fire drill, a real alarm came up. Just after we had gotten back in, the fire alarm went off again. They put it on audible silence with the strobes still flashing and made an announcement over the intercom saying “the fire alarm was not shut off correctly”. Then someone pointed out it smelled like smoke in a certain hallway in the school. So they got back on the intercom and said “we need to evacuate the building”. We left the building while the alarms remained on audible silence with the strobes still flashing. Turns out there was a problem with the air conditioner in one of the hallways.