loaded for bear

adjective2

1. •
   Thoroughly equipped, as for a demanding task or confrontation.

   • "The whole Jap Navy," said Captain Sams, waving at a map of Japan on the wall behind him, "has been steaming across the Pacific loaded for bear." — 1955
2. •
   Mentally prepared for a daunting situation or confrontation.

   • Every Elliott and Crawford and MacAllister is on the warpath, loaded for bear. — 1917