The psc-ns3 repository supports research on public safety communications and beyond. The Long Term Evolution (LTE) module has been extended to support device-to-device (D2D) and UE-to-Network relay communication and a new psc module has been added containing a Mission Critical Push-to-Talk (MCPTT) application, a new HTTP application, and a UAV mobility energy model. Ongoing work includes New Radio and V2X extensions. Available here: https://github.com/usnistgov/psc-ns3