1: Guns in the garage

5: Use UPS

9: Seat at the bar

14: Brainwave

15: Hawaiian dance

16: Huge swarm

17: Naturally occurring potassium nitrate

19: Urged (on)

20: Modern form of communication

21: Dance with a dip?

23: St. Louis gridder

25: Render obsolete

30: Change

33: Dance part?

35: Did in, old-style

36: Razzle-dazzle

37: Long and lean

39: Takes a tumble, at times

42: Ruing the run, perhaps

43: Dunderheads

45: Tooth's partner

47: What golfers try to break

48: Stage of advancement

52: Half a tick

53: Take to court

54: Extremist

57: Palatable

61: Black tie affairs

65: Self-restrained

67: Maui greeting

68: Hideaway

69: Olympic weapon

70: 'Loves me not' unit

71: Small whirlpool

72: Like a dungeon

1: Get ready to shine?

2: Cheese with a red coat

3: The Sail (southern constellation)

4: Firesign Theatre skit, e.g.

5: '___ Loves You'

6: Crude living quarters

7: Some intestinal divisions

8: Living room

9: Cover a point?

10: Dress fancily, with 'out'

11: Ending of many WWW addresses

12: Pindar product

13: Ran in front

18: Land maps

22: Take an evening course?

24: Ale ingredient

26: Medics

27: Diagonally

28: Sparkling topper

29: Any acetate, chemically

30: Parsons' domiciles

31: Debussy's 'La ___'

32: Due (to)

33: History or English

34: In a rush

38: Held on to

40: Faux follower

41: Gains a lap

44: Kind of support

46: Contemptible person

49: Hardly hale

50: Annoy

51: Approached

55: Part of ROM

56: In the thick of

58: Dad

59: Short newspaper piece

60: Like one end of a pool

61: Generation separator

62: Tap output

63: Auction offering

64: 'Caught you!'

66: Get nosy