Since December 31, 2019, when the 2019-nCoV coronavirus was first reported from Wuhan, China, It has spread like wildfire to every corner of the globe, posing a serious threat for the foreseeable future. Millions have been infected, although a worse tragedy has been avoided thanks to widespread adoption of social …

In the first half of the twentieth century, guns were the primary weapons used against aircraft. The small arms weapons typically fire ball ammunition, or armor-piercing projectiles, known as AP rounds, or AP projectiles with incendiaries, known as API rounds. The AAA weapons and the larger-caliber aircraft guns usually fire …