"Mum...evidence?" asked

A five-person investigation team was investigating an empty warehouse on the outskirts of the city. They were looking for evidence of a drug syndicate allegedly operating there. However, as they entered the warehouse, they heard the sound of a door slamming shut behind them. They turned around and saw several armed men standing in front of the door, looking at them coldly.

"We've been waiting for you," one of them said sarcastically. "You won't make it out of here alive."

The investigation team immediately grabbed their weapons and took cover behind some boxes and shelves. They tried to shoot back, but their bullets were not enough to deal with the large number of enemies. They couldn't call for help either, as their mobile phone signals were blocked by jamming devices.

"How do we get out of here?" one of the team members asked frantically.

"Relax, we have to find another way out," said the team leader calmly. "There might be an emergency exit or a window here."

"And how can we find i