Jake's Campaign - Chapter 4
Above: All emblems from chapter 4
Emblem 2: After the chopper is destroyed, Jake and Sherry will make their way down several quiet alleys. Keep your eyes left as you cross the street to find this emblem on the hood of a car - one which still has its headlights on.
Emblem 3: At a certain point, Jake will leap from a window and fall through some canopies back down to street level. From the point where you hit the ground, simply look to your left to find an emblem.