Defibrillator

The Automated External Debfibrillator (AED) is a portable electronic device that automatically diagnoses the potentially life threatening cardiac arrhythmias of ventricular fibrillation and ventricular tachycardia in a patient, and is able to treat them through defibrillation, the application of electrical therapy which stops the arrhythmia, allowing the heart to reestablish an effective rhythm. The defibrillator is used in cases of life threatening cardiac arrhythmias which lead to cardiac arrest.

Battlefield: Bad Company 2
In Battlefield: Bad Company 2, the Medic class for all teams is equipped with the AED as a gadget. The AED can be used to revive recently dead teammates or offensively as an instant-kill melee weapon on live enemy players. Teammates can be revived even if they have died from headshots, explosions, or even from being run-over by vehicles. When revived, teammates respawn at the location of their body in full health. In addition, the ticket lost from the revived player having been "killed" are restored to the team ticket counter. There is an approximately 4 second cooldown for the AED before it can be used again.

In the Bad Company 2 demo, the AED description reads: "[The AED is]capable of resuscitating victims in a state of cardiac arrest. Administration must be done within seconds of arrest. It is inadvisable to use it on a healthy individual or as a form of 'entertainment'".