Easy! Just log on to Air21's Tracking Website dedicated solely for US Embassy Philippines and all you need to have is either the MNL case number OR the Airway Bill number which is in your Air21 receipt. Those numbers will also be sent to you through a text message if you filled out the Air21 form at the embassy and left your mobile number on it.

I'm still waiting for my passport with visa to be delivered. My USEM interview was on a Wednesday but Friday was Eid'l Fitr and was a Holiday so I'm expecting the delivery within this week. But for those who are interested I will leave you with a printscreen of two cases, one a Manila-based delivery and the other is an out of town delivery. Timeframes are clearly stated and it's just a glimpse on how quick the delivery could be. Airway bill numbers were randomly entered on the system, so no invasion to personal privacy was intended.

Happy tracking! :)


[Edit]
And here's mine :)