Puzzle

 ACROSS

  1 (Not my mistake)

  4 Drill leader: Abbr.

  7 Summit

 11 Vowel-shaped pipe part

 13 Spa sounds

 15 Cereal in a salty mix

 16 *L.A.'s longest-tenured mayor (see letters 4-5)

 18 Garr of "Tootsie"

 19 Model Sedgwick

 20 Withstand

 22 Collector's goal

 23 Circulatory ___

 25 Cuts' protectors

 27 *Skier dubbed "La Bomba" (letter 1)

 32 Six-pack contents

 35 Notoriety

 36 People put on pedestals

 37 Chowder morsel

 39 Indian coin

 42 ___ Saint Laurent

 43 Summer Triangle star

 45 Jazz's Fitzgerald

 47 D.C. summer setting

 48 *Made-to-order shades (letters 9-10)

 52 Annual Jewish meal

 53 Chemical variant

 57 Astronaut Jemison

 59 Naval petty officer

 62 Long dress

 63 Grand Ole ___

 65 *"She's Not There" band, or another title for this puzzle (letter 10)

 67 Puccini solo

 68 Dohyo wrestling

 69 Perceive

 70 (Don't open at the office)

 71 www.cia.___

 72 College sr.'s test, often

DOWN

  1 Big rigs

  2 Still being debugged

  3 Digital storage medium, briefly

  4 "No Ordinary Love" singer

  5 Some square dance partners

  6 Believer in a deity

  7 Don't just sit there

  8 "Night before" is a homophone of one

  9 French for "mother"

 10 Way out

 11 Beehive State natives

 12 ___ paragraphs

 14 Major restaurant supplier

 17 Elbow-straining judo hold

 21 Filmmaker hidden in "what a time"

 24 Santa's helper

 26 Wine taster's criterion

 28 Australian bird

 29 Drive away

 30 Ran in the wash

 31 Part of T.A.: Abbr.

 32 "Back in Black" band

 33 "Sacre ___!"

 34 Font category

 38 Allot

 40 Yalie

 41 Climate pattern whose name has a tilde

 44 Hair fullness

 46 Jaguar spots, e.g.?

 49 Track competitions

 50 Dudely embrace

 51 Gloomy

 54 Bangor's state

 55 Past partners

 56 What 12-, 26- and 44-Down do from their crossing resting places? (Read the starred answers' indicated letters for a bonus!)

 57 Eerie sound

 58 Interest figs.

 60 Office note

 61 Sea of ___, shallowest in the world

 64 Partner of "pitch" and "roll"

 66 Taste enhancer, for short

Solution