One possibility was in Landstuhl, Germany, an army base that serves as a stopover point for soldiers being sent back to the U.S. for treatment.

FORBES: Military Chases Mystery Infection

Annapolis is a popular Fall stopover point for sailors from the Northeast who aim to sail their boats south to the Caribbean for the winter, or to points beyond.

FORBES: The Real Deal... Mike Horn Takes Young Explorers to the Far Corners of the Planet

Environmentalists treasure Plum Island as a home to rare plants, a site where seals rest on rocks in large numbers, a stopover point for migratory birds and a habitat for endangered species like the roseate tern.

WSJ: Long Island Town Lays Strategy to Protect Plum Island