The Watson HE99-X "Firefly" is the Shai-Gen Rocket Launcher. The Firefly holds 5 rockets at a time with 15 in reserve. The Firefly has a homing function but no zoom function. Usually one person in Shai-Gen group will use the Firefly. If the agent has a high agility level then he can take down patrols of Shai-Gen without being fired at and by using as little ammo as possible. Statistically, this is the best explosive device in the game, and is a popular choice amongst high ranking agents. Shai-Gen often use this weapon en-masse, and can quickly obliterate even the most developed of Agents. Shai-Gen often use it in strongholds, on roof tops.