You have it almost right. What you have will get the job done but you can get the same result with less events. Basically what you're doing is sending a helo to a waypoint list, landing it, then sending it to another waypoint list and landing it.
Change SSN 2 AI : combat speed = 100 km/h<-----don't need this 'ACTION' in any event . . . only use patrol speed.
Change SSN 2 AI : AI state to Land<-----Don't use this in COOPS. Helo will land when it reaches the last waypoint in the Waypoint List its following.
Change SSN 2 AI : Red Alert<-----You can't change Alert Status of a vehicle
-----THESE EVENTS ARE NOT NEEDED!-----
Event 1: Helo Take Off
Triggers:
Event 0 has been triggered
Actions:
Redirect SSN 2 to waypoint 1-0
Event 3: Slow Helo Down
Triggers:
SSN 2 has reached waypoint 1, 4
Actions:
Change SSN 2 AI : patrol speed = 0 km/h
Event 4: Chinook Land
Triggers:
SSN 2 has reached waypoint 1, 4
Actions:
Change SSN 2 AI : AI state to Land
Event 5: Helo Take Off 2
Triggers:
Event 5 has been triggered
Actions:
Redirect SSN 2 to waypoint 2-0
Event 8: Helo Slow Down 2
Triggers:
SSN 2 has reached waypoint 2, 3
Actions:
Change SSN 2 AI : patrol speed = 0 km/h
Change SSN 2 AI : combat speed = 0 km/h
Event 9: Helo Land 2
Triggers:
SSN 2 has reached waypoint 2, 3
Actions:
Change SSN 2 AI : AI state to Land
This is how it should look:
Event 0: Helo Take Off
Delay event 60 seconds
Triggers:
Group 1 is within area 1
Actions:
Redirect SSN 2 to waypoint 1-0
Change SSN 2 AI : patrol speed = 100 km/h
Event 2: Slow Helo Down
Triggers:
SSN 2 has reached waypoint 1, 3
Actions:
Change SSN 2 AI : patrol speed = 50 km/h
Event 3: Helo Take Off 2
Delay event 60 seconds
Triggers:
Group 1 is within area 3, and
SSN 2 is in area 3
Actions:
Redirect SSN 2 to waypoint 2,0
Change SSN 2 AI : patrol speed = 100 km/h
Event 4: Helo Slow Down 2
Triggers:
SSN 2 has reached waypoint 2, 2
Actions:
Change SSN 2 AI : patrol speed = 50 km/h
When the helo reaches the last waypoint in Waypoint List 1 and Waypoint List 2, It will land.
How do I get the chopper to stay put until the Blue Players trip the final waypoint and win the game
The helo will not go anywhere unless you set up an event sending it.