Defense Secretary Ash Carter says the U.S and India have reached a preliminary agreement that will make it easier for the two countries' militaries to work together in disasters or other emergencies.

Carter says the two countries have "agreed in principle" on the logistical agreement.

He spoke during a news conference Tuesday with Indian Defense Minister Manohar Parrikar

Carter says the two countries expect to soon reach a second pact to improve the sharing of information on commercial shipping, in a move to beef up security on the seas.

U.S. defense officials said the first agreement will help the two militaries coordinate better, including in exercises, and also will allow the U.S. to more easily sell fuel or provide spare parts to the Indians.