United Launch Alliance have shown a plan to catch their falling engines with a helicopter: http://www.planetary.org/blogs/jason-davis/2015/20150413-united-launc

United Launch Alliance have shown a plan to catch their falling engines with a helicopter: http://www.planetary.org/blogs/jason-davis/2015/20150413-united-launch-alliance-vulcan-rocket.html http://www.planetary.org/blogs/jason-davis/2015/20150413-uni...