IGI 2 Mission 11 The Airfield (First Method)

What will one do in this mission if (s)he got a knife only? Then see how I completed this mission with DAVID JONES rank. Time to complete mission: 8:36 To the viewers: I started with a knife only in the hand so I proceeded the mission in this way. Of course, if you sequentially going throughout the mission, you might save the ammos of silence gun and pistol from the prison break mission, so this guide is trivial to you. To be honest, I apply ctrl+shift+F9 key to open all mission and I directly play this mission thereby got only knife in the hand. Then I wished to proceed from there only so eventually found this way. I hope you may understand.