Behind such notable climbs as Hero and Zero, hides another good problem called Scott Frye's Army. It starts on a blunt arete and climbs up a spartan face in classic Yosemite style: crimpy and technical. The first move sets the tone: a desperate slap from two bad side-pull slopers to a good edge. While the hard climbing is mostly in the beginning, it never really lets up, either.
To find the problem, walk around the Hero boulder and it is hard to miss.