Lockheed has built a room resembling a massive acoustic chamber, in which each helicopter will be blasted with electromagnetic energy to test operations in a nuclear explosion, among other scenarios.
There's really no mention of whether the alterative would've been able to do any better. Seeing as the S-92 hasn't landing any major military contracts, I wonder. Blackwater has some, but that's about as close to a military contract as I've found. Britain and Canada have both bought the EH/US-101.