The constant concern over GNSS jamming & spoofing is causing many network operators to utilize other trusted references for synchronization, relegating GNSS as a tool for measurements only.  This presentation describes how one US agency has decoupled network synchronization from GNSS with multiple trusted references across the enterprise network. Topics include: World view of GNSS jamming & spoofing events Review of GNSS alternative trusted references Sync planning for non-GNSS strategies Safely utilizing GNSS references with protections