A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Position-Finding
From: Richard B. Langley
Date: 2018 Oct 5, 06:02 -0700
"To best protect their citizens, economies and national security, policy makers should look for several specific characteristics in APNT [alternative positioning, navigation, and timing] systems and how they should be deployed."
-- Richard Langley