testing and improving our capabilities in space. this includes technology like more efficient life support systems that reduce the cost of future missions. and in order to reach the space station, we will work with a growing array of private companies competing to make get to go space easier and more affordable. [ applause ] i recognize some have said its unfeasible or unwise to work with the private sector in this way. i disagree. the truth is, nasa has always relied on private industry to help design and build the vehicles that carry astronauts to space from the mercury capsule that carried john glenn nearly 50 years ago to the space shuttle discovery currently overhead. by buying the services of space transportation, rather than the vehicles themself, we can