Forgive me this On Topic h/j... But there is real relevance in answering your Questions.
The Chinese have a 'Spot-On' Saying about this matter by suggesting:
"May You Live In Interesting Times..."
I've certainly had a great chance to do just THAT. I enlisted in the United States Coast Guard back in 1970 for a full 4 Year Tour and was chosen for Aviation Machinist's Mate School. Later on, I specialized in Main and Tail Rotor R&R Work as well as being assigned to the Engine Shop for 'Closed Door Work' on the GE (General Electric) T-58 Turbo-Jet Engine Re-Build Service. In addition, I performed Mechanical Repairs of practically everything else involving the service, repair and maintenance of (4) USCG Sikorsky HH3F Helicopters assigned to the U.S. Coast Guard Air Station serving the Tampa Bay Area of Florida.
I was also a USCG SAR (Search And Rescue) Air Crewman, Hoist Operator and Plane Captain for the duration of my service. I felt privileged back then and still do to this very day, as back in the 1970s, World Wide there were only 2,500 Coast Guardsmen in the entire USCG Aviation Branch when I was a "Brown Shoe" in the service during the Viet Nam War.
During my Tour of Duty... we lost 1 of those 4 Helicopters in December of 1972 along with 4 Men ( 2 Pilots, a Radio Operator and a Flight Mechanic) and 4 Civilian Seamen just after they were Rescued and hoisted up out of the dangerous waters in the Gulf of Mexico from a sinking Fishing Vessel called "The Wanda Dene" during heavy seas and a huge storm.
We never recovered our Men from that event (The remains of one Civilian were found during the intensive follow ups searches in the weeks that followed) and we never determined the cause of the crash. The Flight Mechanic on that SAR was also my Boss, Petty Officer First Class, Edward Nemetz... and he took that Mission after another Enlisted Man had called in sick. So the memory of this subject of Air Craft Accidents involving Servicemen and Civilians losing their lives in Machines that should otherwise work perfectly bothers me to this very day. Whenever I dwell upon those times... it tends to lengthen my shadow.
Rest In Peace... USCG Crew of The Helo #1474
People who often see the Planes and Helicopters of the USCG flying overhead perhaps would never imagine or understand that even though they don't ordinarily get shot at as with other U.S. Armed Forces (except by 'Crazy Cajuns' and Looters wielding High Powered Rifles around the area of the Gulf Of Mexico near New Orleans during certain Hurricane SAR Operations) the daily working conditions are ALWAYS very hazardous. So many of us would often repeat out loud, the 'Old Chant' taken from Days of the Boat Rescuers from 18th Century Original New England "Revenue Marine":
"You HAVE to Go OUT... But You DON'T Have to Come Back..."
Bringing the history of the Navy, Marine Corps, and Coast Guard to life.
www.navalhistory.org
This is the record of the USCG Aviation Service People who never arrived back at their Air Stations after hearing and responding to the calls of...
"Put The Ready Aircraft On The Line..." coming out over the Air Station Loud Speakers:
Fatal Coast Guard Aircraft Accidents - A history of USCG aviation accidents that took the lives of those serving others.
www.check-six.com
After mustering out, I was fortunate in being immediately hired as a Sworn Police Officer by one of the larger Metropolitan Areas of Florida. I worked from then on for a full 25 Years in a long and interesting Law Enforcement Career. I spent the last 18 Years of it as a Detective, with the latter decade of that time frame assigned to work in the Major Crimes and The Homicide Squad.
So Yes... Yay Science... and Yay... Forensics. :>)