CQC-6
... that the CQC-6 knife by Ernest Emerson was first developed for a US Navy SEAL Team, and went on to popularize the concept of the "tactical folding knife"?
... that the <b id="mwGxU"><a href="./CQC-6" id="mwGxY" rel="mw:WikiLink" title="CQC-6">CQC-6</a></b> knife <i id="mwGxc">(pictured)</i> by <a href="./Ernest_Emerson" id="mwGxg" rel="mw:WikiLink" title="Ernest Emerson">Ernest Emerson</a> was first developed for a <a href="./United_States_Navy_SEALs" id="mwGxk" rel="mw:WikiLink" title="United States Navy SEALs">US Navy SEAL Team</a>, and went on to popularize the concept of the "tactical folding knife"?