1: 'Look at quickly,' I cry loudly (7)
2: Best Southern general retreats riding cross-country (5)
4: They can't reproduce sounds like an operating system (7)
5: Lauds professor's initial salary increases (7)
6: Violently storming while on the high seas (9)
7: Partially hear the noise coming from the ground (7)
9: Mechanical worker pushing start button in the depths of the plant (5)
10: At first, actors I directed did poorly (5)
14: Wildly game sycophant heard 16-downs successors (9)
16: A group of soldiers demolish a bridge. (7)
17: Tunes aware of dirigible (7)
18: Eastern oxcart confounds blackmailer (7)
19: Plastic shelf for meat (5)
20: Bond leads in The World Is Not Enough (5)
21: One true turning on the way (2,5)
24: Dan is back to Iowa with a famous gymnast (5)