** FILE **In this April 9, 1993, file photo Sen. Joe Biden, D-Del. stands in front of a Danish armored personnel carrier at the UN-controlled Sarajevo Airport, making a statement about his trip to the besieged Bosnian capital. Barack Obama selected Sen. Joe Biden of Delaware late Friday night Aug. 22, 2008 to be his vice presidential running mate, according to a Democratic official, balancing his ticket with an older congressional veteran well-versed in foreign policy and defense issues. In Washington, Biden, 65, is known as a collegial figure even when he's competitive _ one who can spin flowery praise one moment and biting fulmination the next. (AP Photo/Michael Stravato, File)