The Defence Ministry has decided to airlift 23 mobile oxygen generating plants from Germany as several states reel under an acute shortage of medical oxygen due to a massive surge in coronavirus cases, officials said on Friday. Each plant will have a capacity to produce 40 litres of oxygen per minute and 2,400 litres every hour. The plants will be deployed in the Armed Forces Medical Services (AFMS) hospitals treating COVID-19 patients. The decision by the ministry came four days after Defence Minister Rajnath Singh granted emergency financial powers to the three services to make necessary procurement in view of the pandemic.