The 153d (Infantry) Brigade Combat Team is about 3,300 Soldiers. They left Orlando in November for Ukraine with a short stop at a Combat Training Center for unit certification. The SMAW is easy to use. Its a rocket, by the way, not a missile. Rockets go where you aim them, like a bullet. (Think of the "bottle rockets" you played with as a kid.) A "smart" missile, on the other hand, can be manipulated in flight either by the gunner (TOW, SAL HELLFIRE, MAVERICK, et al), a radar (Air Force stuff), or be a "brilliant" missile that guides itself autonomously as in JAVELIN. JAVELIN is a game changer because it can hit a moving target, guiding itself, enabling the gunner to shoot and scoot ("fire and forget"), unlike previous weapons that must be guided by the gunner, exposing him/her to enemy fire during the time of flight. The 153rd is also training Ukrainians to use JAVELIN, which is more complex to use than an M141 (SMAW).