Dam and Blast

Dam and Blast is a mission in Grand Theft Auto: San Andreas given to protagonist Carl Johnson by Wu Zi Mu as part of plans to pull off a heist of Caligula's Palace from The Four Dragons Casino, a casino located along The Strip in Las Venturas, San Andreas.

Mission
Carl, having successfully convinced Millie Perkins to date him in order to obtain her keycard, is now positioned to continue preparations for the heist on the main vault of Caligula's Palace. His next step is to establish a means of temporarily cutting the power supply to Las Venturas in order to provide himself and Wu Zi Mu's men with the cover of darkness and the resulting confusion while robbing the safe. To do this, Carl heads out to Sherman Dam, which supplies Las Venturas with hydroelectric power, to plant remotely detonated explosives on the main generators. After sneaking into the dam's facilities and planting the explosives, Carl escapes to the roof, only to be trapped by the guards. With deputies and SWAT closing in with their Rangers and Enforcers from the dam's roadway below, CJ narrowly escapes capture by performing a swan-dive from one of the dam's control towers into the outlet channel to the south (erroneously labeled as Sherman Reservoir by the game).

Mission Objectives
In order to complete the mission the player must:
 * Go to the airport. You're going to need a plane to parachute onto the dam quay
 * Fly the aircraft to the jump point over the dam
 * Get to the highest altitude possible using the aircraft
 * Land on the dam quay
 * Go and pick up the knife
 * Get past the guards and find the entrance to the generator room
 * When close to a generator press (RETURN button for PC, Triangle button for PS2, Y button for Xbox) to plant the charges. You need one on each generator
 * All the generators have been rigged, get to the exit

Reward
The reward for completing the mission is an increase in respect. The mission Cop Wheels is unlocked.

Glitches
Some online walkthroughs for this mission, such as that posted on this website, indicate that Carl loses his weapons after parachuting out of the plane. In the PS2, iOS, and Xbox 360 versions, at least, Carl keeps all his weapons for the mission. In the PC version, if Carl lands on the red marker, he can keep his weapons; if he "loses" his weapons, he will be forced to use the knife, and won't even be able to use fists.

It's unclear whether this is a glitch, or the loss of weapons reported in the walkthroughs is a glitch; the BradyGames Official Strategy Guide makes no reference to losing weapons (and neither do either of the video walkthroughs on this page). The player regains his weapons at the end of the mission, other than any Brass Knuckles or Parachutes he had.

If the player loses their weapons, it is possible to regain them by purchasing at Ammu-Nation. All ammunition will be restored by a single purchase of that weapon type. However, the keyboard commands to change weapons will be rendered inoperative until CJ lands in the water, meaning the player will be forced to use the last weapon purchased.

Trivia

 * Carl has to obtain the knife on the quay in order for the mission to continue, even if he already has one in his inventory.
 * After completing this mission, a one-star wanted level is attained.
 * The two eavesdroppers in this mission are the same two men in the mission "Madd Dogg" who taunt Madd Dogg, yelling at him to jump off a building in Las Venturas where he is perched precariously on a ledge. They are also seen in the mission "Mountain Cloud Boys", rooting for their respective bets in the betting shop. One of them can also be seen in "The Introduction" where Carl robs his money in an alleyway.
 * It is not required to use the Nevada to reach the marker over the dam. CJ can switch to any other plane or helicopter, as long as he gets into the Nevada and gets out again. The parachuting cutscene will not play and access to weapons will not be lost, even if Carl misses the marker.

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