Based on the Coast Guard Historian’s timeline, https://www.history.uscg.mil/research/chronology/
With inspiration from Mike Kelso

1933  Prohibition came to an end on this date when the 21st Amendment to the U.S. Constitution was ratified.

1963  CG-40597 completed a record run of 450 miles from Baltimore, Maryland to Boston, Massachusetts in a running time of 20 hours.  The first of two prototype twin-screw 40-foot plastic utility boats, CG-40597, was powered by 350 HP Cummins VT-6 diesel engines and had a trial speed of 29 knots.  Endurance at 25 knots was 200 miles.

FN Heriberto S. Hernandez

1968  FN Heriberto S. Hernandez, a CGC Point Cypress (WPB 82326) crewman, was killed in action in Vietnam.

USCGC Heriberto Hernandez (WPC 1114)