_____ is executed in support of friendly forces in close enemy contact or against enemy forces out of contact with friendly forces.

The correct choice is highlighted by the nature of the operations it describes. Army Attack Aviation involves the use of Army aviation units to strike enemy targets at various ranges, which can indeed support friendly forces that are either in close contact with the enemy or engaging targets that are not within direct sight of friendly forces.

This capability is critical in modern warfare as it allows for rapid response and precision strikes, enabling the force to maintain pressure on the enemy while protecting its own units. Army Attack Aviation can integrate with ground tactics effectively and provides the necessary firepower and support needed during complex engagements.

The other options refer to specific tactics or definitions within joint fire support, but they do not encompass the broad capability and versatility associated with Army Attack Aviation in both close and stand-off scenarios. Close Combat Attack, for example, typically implies direct engagement scenarios that may not effectively capture the full array of capabilities provided by Army Attack Aviation in a variety of combat situations.