Vapor purge testing provides critical information on how long it takes an aircraft operating in areas at risk of chemical attacks to purge hazardous chemical vapor and replace it with toxicologically safe, breathable air.
The U.S is going to supply Ukraine with cluster munitions bombs or shells that release a hail of mini-bombs over a large area. Here s why that s controversial.
President Donald Trump was impeached, but acquitted at the beginning of 2020. As the year closed, he lost the presidential race to Joe Biden. The former vice president was last candidate standing in a record field that saw more than 25 Democrats run for the nomination including Kamala Harris, Bernie Sanders and surprise newcomer Pete Buttigieg.
These are just a few highlights of the events that took place throughout this year.
A photograph is known to be worth a thousand words, so here’s a look back at the photos that shaped 2020.
January 2020
Credit: AP
Debris is seen from a plane crash on the outskirts of Tehran, Iran, Wednesday, Jan. 8, 2019. A Ukrainian airplane carrying at least 170 people crashed on Wednesday shortly after takeoff from Tehran’s main airport, killing all onboard, state TV reported. (AP Photos/Mohammad Nasiri)