Recently I have seen N912NB a Boeing 737 registered to SLC Aviation out of Akron,OH flying in and out of LAL,RSW and MIA. Any idea as to what this aircraft is being used for? It was at KLAL in January of 2012 for around a month or so. I was wondering if it was being retrofitted by someone or undergoing maintenance while at KLAL. It is a well kept older 737-200, if anybody has any idea please post.