Those people in the boat seem awfully calm and composed considering what seems to have just happened.

yeah really i would be diving in

Chopper looks real boat looks shopped.

A search of google has video and you can see those people in the boat in the video

please post a link for the google video

http://www.webmunism.com/vids/of/NH90+helicopter%2C+serialled+MM81519+EI-202+of+the+1+Gr+Sq+of+the+Italian+Army+based+in+Viterbo+crashed+on+June+1

the boat in the foreground is probably foreshortened it is impossible to judge relative distances based on relative object sizes unless you know the divergence of the optical or imaging system. For instance a gnat might look bigger than the moon.

I think its safe to say that they're close enough to need a change of underwear