Same day passports
According to the State Department, you can get a passport "right now" if you have a life or death emergency.
This site advertises same day passports for "urgently departing citizens" but doesn't mention the life or death thing.
Can you get a same day passport, even if it's not a real, honest to goodness, emergency? The non-government website makes it seem like you can, but I guess that's a matter of interpretation.
Pictures about "Same day passports"
HOW TO GET YOUR PASSPORT SAME DAY? | Steps on how to get your passport in 1 day
Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.
Images: Nadiia Yahaha, Gonzalo Carlos Novillo Lapeyra, Artem Beliaikin, Sobia Akhtar