developed and flown in the past 40 years all while offering the highest thrust to weight ratio ever achieveed. we are investing in a next generation rocket engine could raptor which will be a fundamental advancement in propulsion technology and serve a number of applications for the national security space market. and we have captured more than 50% of the global space launch market unilaterally increasing u.s. market share from 0% in 2012. with respect to a national engine program, the air force is undertaking a strategy to result in not just a rocket engine, but in launchsystems. we believe this approach will, if done correctly benefit the entire u.s. industrial base, properly require private industry co-investment. most importantly the air force is seeking to insure that any new system is commercially viable in order to end the current practice of costly and unsustainable government subsidization. spacex stands ready and able to provide access to space for the united states with our launch systems today as well as next generation propulsion launch systems. in may the air force certified the