In late November or early December, the first known aerial combat takes place over Naco, Mexico, between Phil Rader, flying for Gen. Victoriano Huerta, and Dean Ivan Lamb, with Venustiano Carranza. Details are unknown, except that a dozen pistol shots are exchanged.
The 14th Weather Squadron is taking on a new mission performed by no other unit in the military: predicting what the climate might look like 10 years from now, with calculations that include the effect of greenhouse gasses.