Probably off topic now but you're right. Kids at 16 used to be married with families. But, I remember the little girl (Jessica?) who fell in the well and the rescue worker who later killed himself. Many said he never got over the stress of the event. I know that's just one case, but there are counselors on hand to help searchers in the event they find a body. I don't know. Kids today are different from how they used to be.
I see where you are coming from, Gitana, and it is certainly to be hoped that the parents of kids involved in a search like this are involved enough with their kids to monitor for signs of distress. Kids are as varied as snowflakes if not moreso--I know of some families where some of the kids are allowed to watch scary movies because they can do so without being emotionally scarred by it--while other kids are kept busy elsewhere due to not being to handle scary movies. As with every other scary aspect of life, either the parents are involved and watchful or they're not.
I just feel that the kids who get involved enough in S&R are extremely likely to have good backing and supervision from their parents and other adults.
Likely there are people of all ages who are not cut out to do S&R for a body, esp a child's body, esp a child who has likely been a victim of a crime. It seems like it would have more to do with the person's emotional makeup, beliefs, and frame of reference than with age.
One of the reasons I'd be supportive of a child wanting to do this is because the adults running the programs. These are responsible, community-involved people who have a lot to offer kids who are willing to learn. Combine this with the fact that getting to the point of joining an actual search requires the kid to jump through a few hoops--which won't him or her one bit. As mentioned upthread, the kids have to maintain a reasonable standard with their grades. They have to commit time and energy, be willing to do the physical training, and to give up some of their "normal" childhood interests. If a kid jumps through all these hoops, it seems less likely (to me anyway) that he or she is going to be sensitive in the sense of being overly disturbed by making some ugly discoveries.
I like the idea, though, of kids being encouraged to pitch in to help others. To develop a sense of community. To develop their compassion, acquire solid practical skills, and learn through their own efforts that they can make a difference.
And I endlessly admire adults who can stand side by side with a kid while the kid is discovering the cold realities of life. The adult ready and able to help that kid face what must be faced, and to come to terms with those hard realities.
There are a lot of kids, I believe, who can handle these things. Those who can't absolutely need to be screened out before they're in on an actual search. And shown that there are many many ways that they can learn and contribute without having to do activities that disturb or depress them.
I just wish all of us adults had more time to mentor kids, and that all kids had access to the positive adult influences that the S&R kids seem to have.