The travel velocity of these two wave types is not the same (P-waves are faster than S-waves). Thus, if there is an earthquake somewhere, the first waves that arrive are P-waves. In essence, the gap in P-wave and S-wave arrival gives a first estimate of the distance to the earthquake.
With the mysterious U.S. Senator Eddie Morra (Bradley Cooper) providing him with a second drug to counteract NZT's deadly side effects, Brian uses his enhanced abilities to help FBI agent Rebecca Harris (Jennifer Carpenter).
Dean Stockwell guest stars as Gunnar Malstrom, one of the leaders of Pendulum, a secret terrorist organization with a plan involving a major attack on the government that the Impossible Missions Force is assigned to uncover in The Pendulum episode on Paramount Television's Mission: Impossible..