Preparedness author Marshall Masters has written numerous books addressing earth changes, space threats, and sustainable survival strategies and technologies. His mission is to help survival community leaders create sustainable communication strategies using affordable two-way radios. He holds an FCC amateur general class radio license and has completed hundreds of hours of emergency training courses in preparation for his latest books, Win-Win Survival Handbook: All-Hazards Safety and Future Space Colonization and Radio Free Earth: The Complete Beginner’s Guide to Survival Communications.