This is catered to the stealth boy. If the player decides life is better with Crimson Caravan, whether they joined 3-Some and came over or Crimson was their first choice, the player will get the opportunity to screw over 3-Some just for kicks. After the player does the newbie caravan run and two regular runs for Crimson, Ailis will trust the player and ask if the player would like to make a lot more money. The job is to have the player sneak into NCR HQ and plant a bomb (provided by Ailis) near Dodge's door. The blast will kill Dorris, some "red shirts" (Star Trek fans stand up!), and wound Major Fleming, but will not harm Dodge.
Next, the player will plant the same bomb materials in Enzo Giordano's desk, along with an anonymous note from a bogus BOS commander. Then the player needs to go back to Ailis and tell her the deed is done. She'll whip out a remote detonator and set off the bomb. After the carnage, Major Fleming, wounded, will gather some troops and start to search the Rim. Ailis will ask the player to follow her while she goes to Fleming and tattles on Enzo Giordano. Fleming will search the desk and discover the bomb materials. Enzo and company flips out and tries to Bonnie & Clyde their way out of the situation. The player may jump in and take a few pot-shots if the so desire, but Fleming and his men should make pretty short work of the Giordanos with their superior firepower.