The phrase "set up a squawk" is commonly used in aviation to indicate that a pilot has activated an emergency alert system. Synonyms for this phrase include "initiate a distress signal," "signal a mayday," and "declare an emergency." Other related phrases include "sound the alarm," "activate the SOS," and "send out an urgent message." It is critical for pilots and air traffic control to have clear communication protocols to ensure that emergency situations are handled quickly and effectively. Using synonymous phrases can help to avoid misunderstandings and ensure that help is dispatched promptly in the event of an emergency.