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 also come and go. If these problems wonât go away or worseâyou feel like they are disrupting your daily lifeâyou may have PTSD. Some factors can increase the likelihood of a traumatic event leading to PTSD, such as: 1  The intensity of the trauma.2  Being hurt or losing a loved one. 3  Being physically close to the traumatic event. 4  Feeling you were not in control. 5  Having a lack of support after the event.ome factors can increase the likelihood of a traumatic event leading to PTSD, such as: 1  The intensity of the trauma. 2  Being hurt or losing a loved one. 3  Being physically close to the traumatic event. 4  Feeling you were not in control.