that backpack was known as the plss, the portable life support system. without it neil armstrong is unable to take those first steps and utter these words. >> one step for mankind. >> reporter: dad i still humble about the whole thing. >> i would see that in my office. >> reporter: as the country marks the 50th anniversary of the moon landing those feelings of pride are flooding back. >> i hadn't thought about the plss for 15 years. i think, yet,, that's righ that's the damn thing that kept him alive. >> reporter: fast forward a few decades and like father, like son, noah is a lunar scientist for nasa. he's not satisfied with following in his father's footsteps, he's working to make his own imprint. >> it reenforces the great decisions you made in exposing tt to me but howvaluable to learn what we did 50 years ago. >>> that's all for news 4 this week. i'm leon harris and we're going to leave you with those amazing imes of the saturn five rocket on the washington monocouple. thanks for jning us. have a great week. dheading to college.s lucks about 10 minu

cronkite: 45 minutes plss time expended. >> neil, this is houston. based on your camera transfer with the lec, do you foresee any difficulties in transfer? over. mr. armstrong: negative. mr. cronkite: the src is the sample rock container? >> it is a sample return that contains the rock boxes. >> backup impartially cleared. in case anybody comes by, they want the door closed. mr. cronkite: this camera angle makes those steps look like they are vastly higher than they are. >> make sure not to lock it on the way out. [laughter] >> a good thought. >> what did he say? wally: make sure not to lock it. [laughter] >> ok, i am on the top step and .an look down over the icu matter to hop down from one step to the next. mr. cronkite: here he comes. mr. armstrong: walking is very comfortable. you've got three more steps and then a long one. mr. cronkite: watch that last step. wally: i guess he expected the steps to compact a little more. as a result is -- it is a long step. mr. aldrin: i am on the fourth rung up. mr. cronkite: and now we have two americans on th

cronkite: 45 minutes plss time expended. >> neil, this is houston. based on your camera transfer with the lec, do you foresee any difficulties in transfer? over. mr. armstrong: negative. mr. cronkite: the src is the sample rock container? wally: it is the container box in which the rocks will be returned. mr. cronkite: this camera angle makes those steps look like they are vastly higher than they are. [laughter] what did he say? wally: make sure not to lock it. [laughter] >> ok, i am on the top step and i can look down and see you. mr. cronkite: here he comes. mr. armstrong: walking is very comfortable. you've got three more steps and then a long one. wally: i guess he expected the steps to compact a little more. but apparently there is one more step. mr. aldrin: i am on the fourth rung up. mr. armstrong: tomorrow. add another inch. you got it? mr. aldrin: that is a good step. mr. armstrong: yeah, about a three footer. mr. cronkite: look at that. mr. aldrin: beautiful. mr. armstrong: isn't that something? magnificent out here. mr. aldrin: magnificent

cronkite: 45 minutes plss time expended . >> neil, this is houston. based on your camera transfer with the lec, do you foresee any difficulties in transfer? over. mr. armstrong: negative. src is thee: the sample rock container? wally: it is the container box in which the rocks will be returned. mr. cronkite: this camera angle makes those steps look like they are vastly higher than they are. [laughter] what did he say? wally: make sure not to lock it. [laughter] step, i am on the top and i can look down and see you. mr. cronkite: here he comes. mr. armstrong: walking is very comfortable. you've got three more steps and then a long one. wally: i guess he expected the steps to compact a little more. but apparently there is one more step. mr. aldrin: i am on the fourth wronrung up. mr. armstrong: tomorrow. add another inch. you got it? mr. aldrin: that is a good step. yeah, about a three footer. mr. cronkite: look at that. mr. aldrin: beautiful. mr. armstrong: isn't that something? magnificent out here. mr. aldrin: magnificent desolation. mr. cronkite: li

. >> 2:12 is the time expended on the plss. >> this is used in. -- thisre still in the is houston. if you are still in the vicinity, could you get a photograph of it level, over? >> all right, we will get a photograph of that. houston, at what time do we need -- do you estimate for the documented sample, over? >> oh, shoot. middlel is right in the now. >> wonderful. take a picture before it moves. [laughter] mr. cronkite: he is talking about the little ball -- >> the bubble. >> we are estimating about 10 minutes for the document sampling, over. deployment ofthe the passive seismic experiment , that isser reflector only the documented rock sample to complete all of their missions on the moon. >> i would like to terminate charging battery bravo at 1:11. mike collins up in columbia, the command module. they are constantly monitoring the systems in columbia. alert to that they are them, watching them, not worried about them. things are going well there, too. >> this is houston. you've got about 10 minutes left prior to commencing your eva termination activities, over. >> roger, i under