Complex sentence: In 1977 VAW-121 made its first deployment as part of CVW-7 on the newly commissioned USS "Dwight D. Eisenhower", but it wasn't until the next deployment in 1980 that they really began to set records.
Split into simpler sentences: In 1977 VAW-121 made its first deployment as part of CVW-7 on the newly commissioned USS "Dwight D. Eisenhower". It wasn't until the next deployment in 1980 that they really began to set records.