All this is good and fine - but the fact remains that after one was down - that left just one helo to carry everyone out ..... and a Blackhawk can't carry that much. One suggestion to cover the unusual wreckage is a highly modified pair of S-92s - They lend themselves to stealthising/quietising, and some of the angles observed fit with the S-92. It would have the required carrying capacity. The team going in didn't know how many extra people they'd want to carry out, so the Blackhawk would be too small. This was a highly secret group that went in - so special aircraft are nothing unusual.