Trip of a life time,

Matter fact a Summer of a life time. The only problem is that my son is scared to take the leap. Okay, Let me break it down.
My son has been in scouts since the beginning and he is up for Eagle this year. He also has always wanted to get his BSA Lifeguard. But he wants to go to church camp. He can do both this year, if he would, because of his age group for church camp this year will make them different weeks instead of the same week. He is a little worried because they are back to back. I really want him to do both. Why? Well, I don't wont to keep him from church camp and I really want him to get his BSA Lifeguard. This will be his last summer to get to go to scout camp. He will be able to come home a few days between and he has his cell phone. Also, boy scout camp is only 15 minutes from the house, so I could go see him everyday if he wanted me to. I don't wont him to have any regrets and enjoy his childhood to the fullest.
Okay to the Trip of a Life Time.
I got a phone call today and one of the scout maters told me that he really wanted Aron to go to Wyoming for a service project. He also told me that Aron's trip was paid for. Yep! That's right, Paid in full! Also, during the trip Aron would have a chance to go to Yellowstone National Park. He has always wanted to go there. When I called Aron over at my mom's and told him, I was expecting him to say, Well, that would make me be gone almost 3 weeks in a row from home. NO! He said, I already know about this and I can't go because I will have to fly on a plane. I said, baby, if I go, will you? He said, NO! I would have to fly! Now, you just have to understand Aron. He is my child if he is pushed to do something, he comes to a halt! He takes his time doing everything, he does things one thing at a time and thinks things through very careful. The only thing is he will not take chances and lets his anxieties stop him from doing things. (Now me, I'm the complete opposite! I have 2 speeds, full speed or dead stop and I let my anxieties push me) I don't always know how to get Aron motivated most of the time because I don't know how he thinks. If he is pushed in school work or anything else, he just freezes up and wont do it, no matter what. I really wish we could work it out and he would go. He says he really wants to, but the plane is a no! Like I said before, I don't want him to have any regrets and I want him to enjoy life now while he is still young. I just don't know what to do. If anyone that is looking from the outside can give me any ideas, I really would appreciate it.
Ps. Doing service projects will help Aron get scholarships, so I wish he would go. Plus, I think if he would look beyond his fears and let the excitement of what can do move him instead of the fear stopping him, he would really enjoy himself to the fullest.
(If this was my other 2, I would have no problems)
Thank You!