Missionary

 is living in the Mojave Wasteland in 2281. He asks the player if they are a "citizen of the NCR. If the player answers "yes", the player is quizzed with three questions to prove that they are an NCR Citizen.
 * Question 1 - Who is the most popular NCR President of all time?
 * Question 2 - What was the original capitol of the NCR?
 * Question 3 - What animal is on the NCR Flag?

Answers: (SPOILERS!) 1. 2. 3. Two-Headed Bear

This will give you access to Missionary's note, which reads cryptically "Hope is the key." This note can also be obtained by killing Missionary. There is no karma damage associated with this, nor will it prompt locals to attack, but it will hurt your standing with the NCR.

Appearances
appears in Fallout: New Vegas.