http://en.wikipedia.org/wiki/Use_of_force_continuum

^ cops i've deposed have told me they aren't trained to go through each step of the continuum before using lethal force but instead they have all steps available for use at their discretion. they're trained when it's appropriate to use each step but like if lethal force is appropriate they don't have to try each of the other steps before they use it. and they can work the steps backwards too - so if they use tasers it doesn't mean the only action left is lethal force. they can still shift down and then shift back up if they have to.

but to address your concern - yes, they are trained to use other types of force and not just lethal force.