Huey N186SD in a training exercise off the Californian coast for the department’s dive teams.

The Orange County Sheriff Department Aviation Support Unit's crews have spent the past year getting to grips with the UH-1H, here flying alongside its two AS350 B2s.

Search and rescue for aircraft crash survivors is another role for the Huey, practised here during an exercise in the Southern Orange County.

The UH-1H is very stable and straightforward to fly, say Orange County Sheriff Department Aviation Support Unit pilots.

Supporting the Orange County Sheriff Department's dive teams is one of several Aviation Support Unit roles.