yep.
My dad was 19.5 years old on this date in 1941.
He had been following the war in Europe, and figured it was only a matter of time before the USA got dragged into it, but Japan and the Pacific wasn't really on his radar at all. Pearl Harbor came as a total shock to him.
He heard the news that Sunday while helping some of his high school buddies break up an old basement floor at one of their homes, in preparation for pouring a new concrete floor in the spring of 1942. Of course all work stopped, and everybody stayed glued to the radio for the rest of the day. (The attack happened at about 1 p.m. Eastern time.)
He didn't rush to enlist. He had just finished high school and had a good job (the Depression had basically ended in 1939 or 1940, thanks to massive federal spending on both social programs and defense contracts.)
But when Congress (in 1942) lowered the draft age from 21 down to 18, and he became immediately eligible, he joined the Army and put in for the Air Corps, rather than wait to get drafted and assigned infantry or whatever the Army needed the most of at the time.