Helicopter Backup in editor created missions

[Spec-Op1 10]

:confused:

Hi,

I´d like to create a map where you have a helicopter as backup (you can command it and call to your and any other position whenever you like to)

It should land on any position I determine.

Its should be like in some of the campaign missions.

How is it done?

please explain step by step.

thx a lot