Update the given paragraph to be cohesive:
Nominally a very heavy bomber squadron. It operated a variety of trainer aircraft to maintain proficiency under Air Defense Command's 416th AAF Base Unit (later the 2347th Air Force Reserve Training Center).
Although nominally a very heavy bomber squadron, it operated a variety of trainer aircraft to maintain proficiency under Air Defense Command's 416th AAF Base Unit (later the 2347th Air Force Reserve Training Center).