Aside from the S-76 from Sikorsky, the Bell Model 222 was also proposed for US Coast Guard service, but both lost to the Aerospatiale SA.366G1 "Dauphin 2."
The following are from 1978 issues of AHS-Vertiflite:
Bell was pretty miffed about the 222 not entering USCG service and continued to push the design despite the Dauphin II offering better performance for short-range recovery. One aspect of the program was a 150-nautical mile operations radius with added weight and mission eqipment (FLIR). It was found that the Dauphin could operate at at least 165 while fully equipped plus additional 150 lbs while the 222 could only do 151 empty, meaning it would fall below the required number when loaded and equipped. The Dauphin had better crashworthy construction than the Bell candidate too.
They once got desperate to the point of referencing the 1933 Buy America Act because it was of French origin and the evaluation aircraft used during trials was an original French model, though manufacture was to go through the Aerospatiale plant in Texas so it still ended up meeting the program requirements.
At least Sikorsky had the dignity to accept defeat pull out of the competition early instead of making a big fuss (they could not conform to the production schedule).