What action should be avoided while launching the MK-127?

Pointing the ejection end toward the body while launching the MK-127 is an action that should definitely be avoided due to safety concerns. The MK-127 is a type of signal parachute flare, and it is designed to be launched in a manner that ensures the ejection end directs away from the operator and other personnel for protection against any potential misfires or errant ejections.

When the ejection end is pointed toward the body, there is a significant risk of injury in case the flare were to malfunction or eject improperly. Safety procedures emphasize the importance of keeping the ejection mechanism aimed away from any person or vital equipment to prevent accidents.

In contrast, using the left hand to align the signal, holding the signal at a 90-degree angle, and striking the firing cap quickly can be part of the correct procedures if performed properly and in a controlled environment. Each of these actions has defined roles in ensuring the MK-127 is used effectively while minimizing risk, as long as safety protocols are followed.