
A netizen shared a story about the Big John, a 90kg man-sized dummy that is used during training to simulate casualties during rescue scenarios.

Here is what the Big John dummy looks like.
A story was spreading that a recruit was trapped inside a storeroom, and he later found out that a Big John was blocking the door with its hands on the handle of the door.
One night, the Guard HQ saw a live CCTV footage of 3 of the dummies getting up and walking near the recruits who were prowling during their guard duty.
The HQ then immediately told them to shorten their patrol and return.
They then saw the dummies turning around and swaying to the front of the cameras.
Images source: MHA.gov.sg and SCDF Facebook