It's why the US Coast Guard has C-130 tankers and AAR capable SH-60s to enable long-range SAR.
Correction Ken, the US Coast Guard C-130's are NOT equipped to pass fuel in flight, nor are the USCG MH-60's equipped to recieve fuel in flight. No pods/hoses on the C-130's, no probe on the 60's.
Originally known as the HH-60, but redesignated as MH-60. Has commanality with Navy SH-60's and was technically an add on to a Navy contract, but the Coast Guard has never had SH-60's.
There are a few cases where AAR would be great, and some still pitch to add a probe to the USCG 60's, but it has not come to pass.
Some versions of the H-60 have a probe, most notably CSAR and special forces versions, but not US Coast Guard versions.