Metal Gear Solid 2 - Big Shell / Plant (Complete mix): Detect, Alert, Evasion, Caution

Original video game music that has been extended to play for around 15 minutes.
Game - Metal Gear Solid 2: Sons of Liberty (2001)
Composers: Harry Gregson-Williams & Norihiko Hibino

MGS2 has my favorite alert situation themes out of the main games. They just fit really well for both the Tanker and Big Shell.
0:00 - Detect
1:04 - Alert
6:18 - Evasion
10:45 - Caution

This video is not for monetary gain of any sort.
Music and property owned by Konami.