For 'BEagle': the very first F-35A has been destroyed (eventually) during Live Fire Evaluation tests LFE. I think destroying one or several HMDS for testing purposes is easy enough but I have no information that this was done. This 2.5Mb PDF has a tonne of info about it from 2010:
http://www.dtic.mil/dtic/tr/fulltext/u2/a528013.pdf