As noted in old posts:

GHWB was both "Sheepskin" & "Timberwolf" to the Secret Service

1980 Presidential Candidates:

John B. Anderson – Miracle,[8] Starburst[8] or Stardust[8][17]

Keke Anderson – Scarlet[8][17][48]

George H. W. Bush – Sheepskin (During 1980 Campaign) [49]

Phil Crane – Swordfish[8][17]

Ted Kennedy – Sunburn[8][14][17]

https://en.wikipedia.org/wiki/Secret_Service_code_name#2016