IIRC, all twelve "Secretary" class cutters had CWIS installed about 25 years ago under the FRAM program, but only CGC Mellon (WHEC717) had RGM-84 Harpoons. For ASW capability, hull-mount AN/SQS-38 with AN/SQS-17 receiver to work with LAMPS III and Mark 46 torpedo tubes were added. For air and surface search, the AN/SPS-40E and AN/SPS-78 with AN/WLR-1H Electronic Support Surveillance Equipment suites were installed. Just forward of the Jayhawk is a "telescoping" hangar that was also not part of the mid-1960's configuration. Except for "sea-whiz" (now a more modern Mk. 15 Phalanx), the Harpoon and aerial torpedo systems have been removed as they were determined to be mission-duplicative with its Navy counterparts.