USCIS Email

I received an email from USCIS saying they sent a request for more info on the K-1 visa application through regular mail today. I'm surprised that they're reviewing my file already since it's been less than 3 months; the website said that the wait time was going to be ~5 months. I hope it's something simple, though I can't imaging what I left out of the package. I would suck if they wanted more documents from Sindy since I was just in Beijing last week.

Crossing fingers...