velcro
... that astronauts have a patch of velcro inside their helmets that acts as a nose scratcher and that the manufacturing process used to create silent velcro for the U.S. Army is a military secret?
... that <a href="./Astronaut" id="mwDW8" rel="mw:WikiLink" title="Astronaut">astronauts</a> have a patch of <b id="mwDXA"><a href="./Velcro" id="mwDXE" rel="mw:WikiLink" title="Velcro">velcro</a></b> inside their <a href="./Helmet" id="mwDXI" rel="mw:WikiLink" title="Helmet">helmets</a> that acts as a nose scratcher and that the manufacturing process used to create silent velcro for the <a href="./United_States_Army" id="mwDXM" rel="mw:WikiLink" title="United States Army">U.S. Army</a> is a military secret?