Explosions on the runway at Canada's Toronto Pearson airport, after two planes crashed into each other. The two planes belonged to Canada's Sunwing and WestJet airlines. The passenger jets collided as one plane was backing out from a terminal gate. Crew on board the Westjet flight took emergency measures to evacuate all of its 168 passengers via an emergency slide. The Sunwing plane caught fire after the incident. Luckily, no passengers were on board.