In agricultural tractors for example, as a general rule 40 to 50 percent of the value of the machine will be lost in the first quarter of the machine's life and by the halfway point of lifetime, from 70 to 75 percent of the value will be lost.
People with PTSD may feel constantly alert after the traumatic event. This is known as increased emotional arousal, and it can cause difficulty sleeping, outbursts of anger or irritability, and difficulty concentrating. They may find that they are constantly on guard and on the lookout for signs of danger.
They may be less interested in activities you once enjoyed. Some people forget, or are unable to talk about, important parts of the event. Some think that they will have a shortened life span or will not reach personal goals such as having a career or family. Arousal Symptoms. People with PTSD may feel constantly alert after the traumatic event.