And the force has no money for helicopters or boats.

The abandoned mine site makes a perfect hiding place for helicopters.

For helicopters, this is also a major problem during a brownout.

However no one could be extracted from the base itself, the area was too dangerous for helicopters.

In addition there is space for general aviation aircraft and helicopters.

You know what he told me when I signed up for helicopters?

There was, however, no place clear enough or big enough for helicopters to land.

I wished that we'd had time to call for helicopters because those guys loved to shoot at anything.

Once the war was over he developed small turbine engines for helicopters.

The requirement for military helicopters is a 30 second hover.