Through the Gap

The second the front door cracked open for morning mail, I didn't wait around! I darted right under the metal door sweep before it clicked shut, sliding out onto the smooth terrazzo floor of the public corridor. What a strip for running! The hallway stretched on like an indoor race track. Further down, someone left a cardboard delivery box tilted against the baseboard. I hit maximum speed, dashed straight up the cardboard flap like a ramp, and caught a split-second of mid-air lift before landing cleanly near the elevator landing. Hallway exploration is officially underway!