Boeing's presentation to the Indian Air Force comparing the CH-47 Chinook with the helicopter that the IAF currently uses, the Russian Mi-26 -- also the largest chopper around. The IAF wants 12-16 heavy lift copters. And soon. The other contenders are the Sikorsky CH-53 Super Stallion and Mil's Mi-26.
Additional info by Prasun K Sengupta
here.