Well if this $2,0 billion package is really complete with life time sustainment support (besides initial training and GSE also spareparts and heavy scheduled maintenance for 25-30 years) than it is understandable.
The V-22 is an aircraft with an accident history that has generated some controversy over its safety.
The V-22 Osprey had 12 hull loss accidents that resulted in a total of 42 fatalities. During testing from 1991 to 2006 there were four crashed resulting in 30 fatalities. Since becoming operational in 2007, the V-22 has had seven crashes including two combat-zone crashes, and several other accidents that resulted in a total of 12 fatalities. But looking to the amount of produced aircrafts, 400+, i think thats acceptable. And i also expect that the design is now matured after all these years, and with that it is as safe and reliable as other heavy helicopters like the Boeing-Vertol CH-47, Mi-26 and Sikorsky CH-53.
But one thing really surprises me, this announcement is so suddenly. All other large defence acquisitions have a long history of mass-media exposure and "politicians-talking-proudly-about-plans-to-put-the-items-on-their-wishlist-moments" to the press, long before a DSCA-approval announcement.
One more thing, the US operates the V-22 often with the M240 7,62 machine gun and also with the M134 / GAU-17/A, but according the DSCA-approval announcement, including the package is the GAU-21 machine guns, ive never heard about this one before.
Edit: the GAU-21 seems to be a 12,7 mm machinegun.
Anyway, this is just a DSCA-approval announcement, no any contracts are signed yet, let alone money transfered.