B-21

下記の記事が出ている。

　The 'B' all and end all: U.S. Air Force reveals the first picture of its top secret $100bn B-21 stealth bomber that will replace the B-52
　Daily Mail: 26 February, 2016
　http://www.dailymail.co.uk/sciencetech/article-3465888/US-Air-Force-unveils-picture-new-stealth-bomber.html