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

February 19

1845  Administrative control of the Lighthouse Establishment was transferred to Revenue Marine Bureau.

1845  Metal buoys were first put into service. They were riveted iron barrels that replaced the older wooden stave construction.

1862  Congress authorized revenue cutters to enforce the law outlawing the importation of Chinese “coolie” labor.

1941  The Coast Guard Reserve was established after Congress passed the Auxiliary & Reserve Act.  The Auxiliary was created from former Reserve.  The legislation was introduced by Representative Gordon Canfield of New Jersey.

USS Bayfield (APA-33) in the transport area off Iwo Jima, 20 february 1945.
Frames from a short film called “Amphibious Invasion of Iwo Jima, H-Hour Minus One”. Dept. of the Navy. National Archives ID 80201, Local ID 428-NPC-15841.

1945  The invasion of Iwo Jima commenced.  Coast Guard units that participated in this campaign included the Coast Guard-manned USS Bayfield, Callaway, 14 LSTs, and the PC-469.  Three of the LSTs were struck by enemy shore fire: LST-792, LST-758, and LST-760.

The U.S. Navy attack transport USS Callaway (APA-35) off the New York Naval Shipyard (USA), on 18 September 1943. Callaway was loading supplies from a civilian barge. Also alongside is the tug handling the barge and two Coast Guard motor boats.

1988  The largest drug bust in Hawaiian waters to date took place with seizure of the Panamanian-flagged freighter Christina M 800 miles southeast of Hawaii.  The units involved were the Navy fast frigate USS Ouellet with a Coast Guard Law Enforcement Detachment from the CGC Jarvis embarked, the CGC Mallow, and an AIRSTA Barbers Point HC-130.