It was a quick and vague line, but when Jay Garrick is handed his helmet by Caitlin Snow, he remarks about how it used to be his fathers and that he never thought hed see it again. More interestingly, Garrick reveals that the helmet was worn by his dad during the War of Americas. Just what that war entailed, were totally in the lurch on at this point. Even more surprisingly, Cisco Ramon seems to be the only member of the S.T.A.R. Labs crew who has his jaw dropped by the mention of this battle. Here's hoping that this gets elaborated on over the coming weeks.