Satellite Mutual Aid Radio Talkgroups (SMART) are SkyTerra's nationwide and regional programs of public safety talkgroups that operate on the SkyTerra satellite network.

These talkgroups enable critical and interoperable communications among homeland security officials, law enforcement, emergency responders, and public safety officials from various departments and agencies across the United States.

SkyTerra is making these talkgroups available without additional cost* to SkyTerra public safety customers. SMART establishes federal, state, local, and tribal interoperability on a nationwide network at the national and regional level, and it's all managed by federal, state, local agencies and one not-for-profit, the U.S. Earthquake Consortium.

• Pioneered by the Department of Justice (DOJ) and the FBI in 2007
• Operates on SkyTerra's satellite communications network
• Immune to terrestrial network congestion and destruction typically associated wit the PSTN; enables talkgroup members to communicate
• Offers one-to-many, push-to-talk, 'dispatch style' communications
• Ability to handle up to 9,999 users
• Connects government and public safety agencies nationwide
• Public safety personnel enrolled in one region are able to quickly join a region(s) outside their regular jurisdiction should the need arise
• All 50 states, the District of Columbia, the U.S. Virgin Islands and Puerto Rico have access to at least one nationwide or regional SMART programs
• SMART programs are made available 'at no additional cost' to SkyTerra Push-to-Talk (PTT) customers*
• SMART programs are providing federal, state, local, and tribal interoperability on a nationwide network at the national and regional level and are managed by Federal, state, and local agencies

J-SMART: a nationwide public safety talkgroup to facilitate communication among local, state, tribal and federal authorities during a crisis.
Managed by: Department of Justice
Monitored 24/7 by: The Department of Justice Integrated Wireless Network (IWN) Dispatch Center (FBI - Seattle).

NS/EP: three nationwide talkgroups designed for communication among critical COOP/COG sites across the country as well as the Network Operations Centers of critical telecommunications companies.

NPHST 1 & 2: Public Health and Medical facilities nationwide
Managed by: Kentucky Department for Public Health

E-SMART: Government and Public Safety Agencies involved in Emergency Medical Services  Managed by: Department for Public Health

F-SMART: Government and Public Safety Agencies involved in Fire Services
Managed by: Charlottesville (VA) Fire Department