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.
Post-traumatic stress disorder (PTSD) happens after seeing or going through a traumatic event involving injury or death, such as an accident, rape, abuse, killing, natural disaster (like a fire, earthquake, or hurricane), or even experiencing a heart attack.ome forms of PTSD include hyper-vigilance, extreme fear of the event recurring, anger or irritability, and a tendency to be easily startled. PTSD is unlike simple shock, depression or stress, in the fact that the body and brain chemistry actually change with post traumatic stress disorder.