Why? The US is already paying the nation's social security money on Manas Air Base, they need Uzbekistan, too?
According to regnum.ru, last week Uzbek Minister of Defense Kabul Bedriev and US General David Petraeus signed a military agreement for future trainings and exchanges. Before signing the agreement the generals discussed key security issues regarding Afghanistan.
I get that there aren't many good options for friends who are also in close proximity to Afghanistan, but Uzbekistan? Really?