TORONTO - Airborne medical trauma units that can cut through storms and fly faster than Ontario's previous air ambulances have descended on Toronto.

The fleet of new helicopters, dubbed "hospitals in the air," are being called a significant upgrade to air medical transportation in the province.

A new AgustaWestland Aw139 helicopter touched down on the tarmac today at Toronto's island airport, as hundreds of curious spectators watched.

Filled with cutting-edge medical equipment, the new air ambulances can also fly further than previous models and handle all kinds of rough weather.

The helicopters will transport Ornge's medical teams, who provide services for patients requiring advanced and critical levels of care during transport.