Ranger Takedown

Ranger Takedown is an unarmed perk in Fallout: New Vegas.

It's acquired by being successful in a speech challenge from Ranger Andy after he tells you about his multiple leg injuries. It can also be acquired by completing an unmarked quest which requires you to check on Ranger Station Charlie and tell him what happened there.

This perk grants the character the ability to do a special attack by simultaneously holding back and the attack key. If done properly, the character will do a special move that knocks the enemy back and down, incapacitating them for a few seconds (during which the character can feel free to land more blows on them).

Bugs

 * Equipping a strong unarmed weapon combined with the Ranger Takedown and using it on a companion (non-hardcore) can cause a possible glitch or a hole in the game. If the Ranger Takedown is executed, and that was the finishing strike to the companion's health, he/she/it will fall unconscious from the takedown, get up, then fall unconscious again from taking enough damage that makes them fall unconscious.
 * When you learn the attack: After a successful speech check and dialogue ends, you will get a message box stating you have learned the Ranger Takedown. After acknowledging the message, the game will fadeout/fade in and upon initiating dialogue with Ranger Andy, you will get this message box a second time and upon acknowledgement the game will freeze. (on PS3 the PS button will still go to the X-media bar, allowing you to quit the game from there rather than shutting off the whole console. Seems to occur when you learn the takedown the first time you speak with Andy, successfully avoided by speaking with Andy and exiting dialogue WITHOUT performing the speech check, then initiating dialogue with Andy again and performing the speech check (worked on PS3). This bug may have something to do with Ranger Andy requesting you to check on Ranger Station Charlie the first time you exit dialogue with him normally. Since the speech check automatically ends dialogue doing it the first time you speak with him may mess with the games scripting, causing the freeze)
 * Prior to patch 1.2.0.31x, learning the Ranger Takedown without Raul Tejada will break the Old School Ghoul quest. This can also be fixed with Console commands in the PC version.
 * If you use this skill on a friendly member of your team and manage to knock them into a state of "Unconscious" while they are still knocked down, their body will fly into the air shortly afterwards, to the height of an average sized building, and when they hit the ground they will get up like normal.
 * The attack may stop working altogether at random moments. This may be fixed by restarting the console.
 * When using this on dead characters repeatedly, it can complete the challenge Knocked Up.