The motorcade for the President of the United States comprises forty to fifty vehicles; in addition to the president, the motorcade may carry his or her spouse or children, members of the press, security, White House officials, and VIP guests. The major members travel in armored vehicles, typically specially configured limousines. The motorcade contains several armored vehicles, a USSS Electronic Countermeasures Suburban, a counter-assault team, and Secret Service agents. When called for, a hazardous materials team precedes the motorcade on alert for potential hazards.