Do you have a basis for your opinion, or are you just making things up?
Actually, I already know the answer to that question. The average age of all active duty military is 28. 37% of the Marine Corps is between the ages of 17 and 21 [1]. And when you remove all the higher ranking officers (who are not very likely to be gunning for an Apache), the average age gets even lower.
Based on this poll [2], it appears the average age of HN is between 21 and 35. The data from the HN survey appears to have been taken down; that would give a much better answer. Regardless, your wrong in saying the average reader of this forum is probably younger than the military personal flying the helicopter. At best you can say it's unclear.
[1] http://www.slideshare.net/pastinson/us-military-active-duty-...
[2] http://news.ycombinator.net/item?id=800158
EDIT: For the record, the parent post contains 100% factually incorrect information and this post contains a refutation with cited facts. Currently the voting split is 9/-1. This is an emotional issue, but let's try and not be so reactionary.
EDIT2: The parent is factually correct because waterlesscloud is referring to the age of the pilot, whereas I thought we were talking about the gunner (the person whose actions are in question). I also assumed the marines were involved, which is also incorrect. Sorry for the false accusation.