Vault-Tec letters are completely random IIRC. 68.151.53.77 08:52, September 22, 2009 (UTC)
Not completely, some Vault-Tec letters are in fixed locations (like the Gomez one in Springvale). Not sure about the letters in this particular location though. -- Porter21(talk) 09:42, September 22, 2009 (UTC)