source: [tag=MD] □ □ □
destination: [tag=MD] [□] □ □
spec: From hurricanes and earthquakes to nuclear power plant meltdowns and toxic contamination , FEMA has been there to assist people in uncertain situations . Fortunately , most Secure Shell applications provide a broker known as a " key agent " , which can hold and manage private keys on your workstations and respond to requests from remote systems to verify your keys .