Some program manager at IARPA must be a YUUUUGE fan of Tolkien’s Lord of the Rings since there’s a program called Amon-Hen, which in the LOTR lore is where Frodo ran to after Boromir got a little too handsy. In the movie, its where Fellowship broke apart after getting ambushed by Orcs.

Hilariously enough, in Sindarin, it apparently means Hill of the Eye, which makes sense considering the program objective is about using ground based interferometers as a GEO imaging system.