Thrown by landmine explosion

I took an involuntary step back, one hindhoof out the door.

BEEP.

What was that?

BEEP.

I turned and spied the half-buried orange disk in the ground just outside the door. A little red light was pulsing on it. BEEP. BEEP. BEEP.

“CLOSE THE DOOR!” The voice came out of nowhere, tinny and mechanical but somehow full of urgency. My heart lurched and I jumped back inside, slamming the door hard.

The explosion just outside tore the door off its frame, hurling it and me back into the room! I crashed through a tattered vanity divider, the smoking door landing over me. “Ugh!!”