[Humberto G]

I appreciate the answers that received in this subject, Thanks to Skunkmeister, FA_Bong and Hot Space.

I do have a little bit of experience in launching Rockets (in game, please!), as I have made missions of that sort using Normandy Map (Not modded) and unbelievable it could sound, I succeeded in my first attempt! (beginners luck) but failed in the Channel Map.

So the answer to my question was pointed out by Skunkmeister, and that was the reason that I visited not my post in few days.

FA_Bong, your explanation is to me excellent, and helped a lot since a couple of aspects related with the timing was confusing me up to now.

Hot Space, please, is there a link to the mission you mention?, because yes, I would like to try it.

Thanks all of you people, you are great people!