1. Beast of burden
2. Break out
3. Andean tuber
4. "Catch-22" pilot
5. Adds to the kitty, say
6. Ariz. neighbor
7. One-time British PM
8. Vermin
9. Comic cry
10. Accept, so to speak
11. Full of oneself
12. Elder leader
13. All in
18. On the road, e.g.
21. Big galoot
22. Shipping weights
23. Avoid
24. A blowhard
25. Kent co-worker
26. Donnybrook
27. Ceiling, e.g.
29. Be silent, in music
30. Tosspot
32. Boys, to men
34. Bring up
35. Aquatic mammal
37. Like The Citadel, now
38. Quiet
40. High-tech special FX
41. Helped in a heist
43. New beginning?
44. Mine finds
45. Boring thing
46. Related maternally
47. "Crazy" singer Patsy
49. "Field of Dreams" setting
50. Alone
52. Detergent choice
53. Part of TGIF
54. _ __ believe
55. Trophy, possibly
56. Hardware chain
57. Directed