Thanks Squirrel for the info.
Marlespo, I have been looking around the web this morning. Here is an excerpt from the VisaJourney.com that may be helpful.
"13.6)...I just arrived in the United States as a K3, but if I have an emergency and need to return to my home country, can I return to the United States with no problems using my K3 visa?"
A..Yes. A K3/K4 is a multiple entry visa, and you may leave the United States and return using the same visa, even if you have applied for Adjustment of Status. Unlike a K1/K2, the K3/K4 does not need to obtain an "advance parole" document to reenter the United States, and applying for Adjustment of Status does not terminate the K3/K4 status".
Julie