Read the following paragraph and determine if the hypothesis is true:

CTV London An air ambulance landed in Fergus Tuesday after a bus fell on a man who was working on it. The incident brought emergency crews to a business on Glengarry Crescent around 1:15 p.m. Wellington County OPP say the 25-year-old man had been doing work on the bus at the business when it fell on him. He was airlifted to an out-of-town hospital with critical injuries. As the incident is considered a workplace injury, the Ministry of Labour has been notified.

Hypothesis: air ambulance was used by amy
It's impossible to say