I do not work with aircraft. I am a security forces k9 handler. Involves a lot of movement including being tackled by dogs. Symptoms are a pretty consistent headache, I wake up with one every morning. Doctors have diagnosed me with a concussion when it happened. Also once in a while I get ringing in my ears and I have had bad short term memory/being really forgetful and last but not least I get dizzy every now and then