239 people presumed dead by plane crash from Malaysia

 Spoiler

Call me a cynic but I'm pretty convinced US intelligence knows exactly what happened to that jetliner. However, they have their own reasons for only cooperating with the search using civilian sources and what other countries' militaries are volunteering (I doubt anyone is fully revealing the extent of their coverage).

You know this was an option to me ever since I heard the craft disappeared and they didn't find a single bit around the supposed crash area.

Not saying it's aliens, but we shouldn't rule out any (even the most ridiculous) option.

Also, it's rather suspicious how 'big' the involvement of the US organisations is and I highly suspect the intelligence agencies know more than they admit at this point.

Remember the US has used the guise of using their own military as a way to devise the public (to cover up) the real reason of why they are present in certain areas, they have done this multiple times in the past and I fear more often than we know already. (Again, not saying this option is fact).