Cinder cone volcanoes are steep, cone-shaped volcanoes built from lava fragments called 'cinders.' These volcanic cinders, also known as ' scoria ,' are glassy volcanic fragments that explode from the volcano and cool quickly, building up the sides of the cinder cone volcano fairly quickly.
Retired Marine Gen. James Mattis has been chosen to be secretary of defense by President-elect Donald Trump, according to people familiar with the decision. (Jenny Starrs/The Washington Post) By Dan Lamothe By Dan Lamothe December 1, 2016. President-elect Donald Trump said Thursday he has chosen retired Marine Gen. James N. Mattis, who has said that responding to âpolitical Islamâ is the major security issue facing the United States, to be secretary of defense.
For the former Michigan State Senator, see John F. Kelly (politician). John Francis Kelly (born May 11, 1950) is the fifth and current United States Secretary of Homeland Security. He is a retired United States Marine Corps general and the former commander of United States Southern Command, the Unified Combatant Command responsible for American military operations in Central America, South America and the Caribbean.