The antonyms for the phrase "am on scene" are "not present" or "absent." When someone uses the phrase "am on scene," it implies that they are physically present at a particular location. However, when someone is "not present" or "absent," it means they are not physically there. These antonyms are important to consider in emergency situations where being on the scene can be crucial to saving lives or preventing further damage. If emergency responders are not present or absent, it can delay response times and put lives at risk. Therefore, it's important to stay aware of the status of those who are involved in an emergency.