@rkhanna Here's a familiarisation phase photo from Mallet Strike 24
Actually I realised my original Comment was out of context to the Picture I was refering to.
What i meant was that the Americans will never operate with anyones elses weapons. A Familiarization Day to test out and feel out partner forces weapons is different from what i meant.
Also a NATO Joint Readiness or an OPFOR Exercise is also different THOUGH (rom what I have been told ) on big Manouevers the Americans tend to revert back to their own systems.
Generally Speaking the Americans demand Interoperability towards themselves - not the other way around.
Anyways - moot point