As LTE deployments in the United States accelerate this year, the nation's tower companies are ready for a fresh influx of revenue from both new site deployments and expansions of existing sites. Yet all is not entirely rosy for the nation's tower companies. The widespread deployment of 700 MHz spectrum could cut down on the number of LTE cell sites needed in rural parts of the country. Additionally, uncertainty about the AT&T/T-Mobile USA merger and the deployment plans of Clearwire (NASDAQ:CLWR) and LightSquared could put a crimp in the tower companies' bottom lines. Special report