Zello PTT Launches as First Tactical PTT Plugin for BlueforceTACTICAL and BlueforceCOMMAND Land mobile radio (LMR) systems, featuring public safety-grade radios and infrastructure, have been the historical “go-to” technology for military and first responders for mission-critical voice and “push to talk” (PTT) communications. For decades, PTT in the military and first responder sectors was provided exclusively by agency-owned LMR systems. All of that is changing. Mature and highly available broadband