This from Fred McCahey:

Has anyone done a special on helmets, particularly the ones with “eagles” on them?
In a photo I previously submitted to, I noticed LT Sutherland had an “Eagle” holding the Lt SS-1 shield in place (posted July 4th 2014). It was rather large and is not seen frequently on current helmets. In fact they seem to be shrinking. Although, in an Erik Haak photo (posted to 7/7/14) a Truck 41 member has the flattened out Eagle.I am not sure of the lingo, but I’m hoping someone has info on these rather massive looking holders.