WASHINGTON (AP) - Chilling security video of last month's deadly insurrection at the U.S. Capitol, including of rioters searching menacingly for House Speaker Nancy Pelosi and Vice President Mike Pence, has become a key exhibit in Donald Trump's impeachment trial as lawmakers prosecuting the case wrap up their opening arguments for why Trump should be convicted of inciting the siege.The House will continue with its case Thursday, with Trump’s lawyers set to launch their defense by week's end.The footage shown at trial, much of it never before seen, has included video of the mob smashing into the building, distraught members of Congress receiving comfort, rioters engaging in hand-to-hand combat with police and audio of Capitol police.