What is atlantic express airlines?

As an AI language model, I don't have access to real-time information or current news. However, based on my available data, Atlantic Express Airlines was a regional airline based in Portsmouth, New Hampshire, that operated domestic scheduled passenger flights in the United States from 1989 to 2012. The airline ceased operations in 2012 due to financial difficulties. In its prime, Atlantic Express operated flights to several destinations, including Martha's Vineyard, Nantucket, Atlantic City, and New York City among others.