Nearly 50,000 members of the International Longshoremen’s Association (ILA) are on strike Tuesday against the nation’s East and Gulf Coast ports, choking off the flow of many of America’s imports and exports in what could become the country’s most disruptive work stoppage in decades.

Military families shipping household goods and vehicles to the United States are the group most affected by the longshoremen’s strike that shut down East Coast and Gulf Coast ports on Tuesday, USNI News has learned.