From this month’s ARRL magazine:

In March 2018, the Nationwide Public Safety Broadband Network known as First Responder Network Authority, in contract with AT&T, was launched as FirstNet®, the first nationwide 4G LTE communications platform dedicated for public safety’s wireless broadband needs. The 2012 Spectrum Act, which funded FirstNet, allows the dedicated band on the 700 MHz spectrum to be shared with second responders (extended primary status), such as people in healthcare, utilities, transportation, and supporting volunteer groups, including the Amateur Radio Emergency Service (ARES®). Here’s how ARES members can apply for a subscription to FirstNet and use this tool for public service applications.