Compositions are provided which include biodegradable microparticles with entrapped or adsorbed antigens, in combination with submicron oil-in-water emulsions. The surface includes a molded structure having a repeating pattern of holes therein and a repeating pattern of sidewall surfaces, the holes penetrating the structure between first and second major surfaces thereof and the sidewall surfaces joining the first major surface. The method includes storing on a machine-readable medium a plurality of talent files. The tariff tables are updatable at the service provider’s discretion using SMS messages. Means are provided to vary the field of view, determine range to target, compensate for bullet drop, and to compensate for crosswind, without removing either hand from the weapon, by monitoring the tilt of the weapon upon which the device is mounted.