The Kentucky birth index lists Robert S. McCormick, born 9 Apr 1920 in Montgomery Co., mother’s maiden name Francis Igow.

The Florida death index lists Robert Stewart McCormick, age 50, died 2 Jan 1971 in Brevard Co.

1945 Florida state census lists in Orlando, precinct 12A, Orange Co., Fla, on p. 2 (for the precinct; image 53 in the set):
McCormick, Robert Stuart, 526 E. Pine, age 25, born Ky, 12th grade education, occupation service.

Everyone on this page and the preceding one is an adult male with occupation service, mostly young, no families, suggesting a military base, but the street addresses jump around erratically.