10/29/2010 05:56 pm ET Updated May 25, 2011

Suspicious Packages Found On Flights, A Timeline (PHOTOS)

Suspicious packages found on US-bound planes in Britain and Dubai sparked a world-wide investigation into what President Obama referred to as "a credible terrorist threat."

Packages were found in both Dubai and Britain, and security threats in Chicago, Newark, and Philadelphia caused cargo searches and heightened security measures throughout the US, reports the AP.

Below, pictures of the events as they unfolded today.