Detailed Instructions: Given a travel related situation, and given a specific question about the situation, summarize the question into a title
See one example below:
Problem: The green carriage is of course first class. This would be our first preference with our 5 month old baby in lap, because of the presumably larger toilets for changing and whatnot. However, the baby being a Western white baby... will occasionally babble, screech or cry uncontrollably for a little while.

Speaking in terms of Japanese culture, should we avoid Green class tickets if we are taking aboard a potentially disruptive baby?

Solution: Japanese train etiquette: Is it acceptable to take a baby in the Shinkansen Green Car?
Explanation: A person gives a detailed description about a situation where they would prefer to travel on the Shinkansen Green Car but is doubtful if doing that would be against the Japanese train etiquette since they will be traveling with a baby. The question is summarized as Japanese train etiquette: Is it acceptable to take a baby in the Shinkansen Green Car? for easy indexing the next time someone searches for a similar phrase

Problem: I appreciate we need to carry both passports at all times and I have been doing so except, due to a distraction, this time I forgot my old passport at home in the US. I am due to fly back soon, which rules out having my old passport mailed to me.

What are my options to go back into the States?

If it helps, I have scans of all documents with me, including the photograph and visa page from the old passport as well as the I-129s form I'm always supposed to carry.

Solution:
I am travelling with a renewed passport and my US visa is in my old passport which I forgot in the US. What are my options?