Three in five Americans are most concerned about emergencies involving a natural disaster or terrorist attack, with a health pandemic closely following as a top concern among 46 percent of respondents, according to Federals Signal’s 2010 Public Safety survey.

DHS Secretary Napolitano announced that 100 percent of passengers on flights within or bound for the United States are now being checked against government watchlists - fulfilling a key 9/11 Commission recommendation a month ahead of schedule.