  We compare the elongation rate and Xmax distributions for three
air-fluorescence experiments: Stereo Fly's Eye, HiRes/MIA, and HiRes. A shift
of 13 gm/cm^3 of the stereo Fly's Eye data, well within the quoted systematic
errors, brings the elongation rates and the Xmax distributions of all three
experiments into reasonable agreement. We explore the implications of this
combined dataset ranging from 10^17 eV to near 10^20 eV.
