Recollections of research on the HF cw (continuous wave) laser. Gross' work at Aerospace Inc. from 1965 on. High altitude atmosphere reaction associated with atmospheric re-entry. Collaboration with T. Jacobs on the cw laser design and HF gas-dynamic laser research (Hartunian); comments on three independent Atomic Energy Commission proposals for laser isotope seperation; contacts with foreign scientists (N.O. Basov, A.N. Oraevskij).