There are interesting facts surrounding Oscar Ortega-Hernandez and this case. At this point in time, we are left with more questions than answers.
Ortega-Hernandez was born on October 2, 1990. Nothing exceedingly interesting here, just added it since it's the same month I was born.
He is from Idaho Falls, Idaho. His family reported him missing from Idaho Falls last month. Incidentally, out of all the small towns in this country, the city of Idaho Falls decided to conduct a full simulated terrorism drill just two weeks ago.
He has a tattoo of the word "Israel" on the left side of his neck. Who does this? Is he an Israeli? Is he Mossad? Maybe he had a girlfriend named Israel and wanted to show his stupidity love by tattooing her name on his neck. *
He reportedly also has a tattoo of three dots on his wrist. Google "prison tattoos."
He was able to get off multiple shots AT NIGHT at a substantial distance from a car. I'm not a professional marksman, but I think it would be formidable for a reportedly mentally challenged individual to get off multiple accurate shots from his distance on a clear sunny day, much less at night.
Authorities found a Romanian Cugir SA semi-automatic assault rifle with a large mounted scope in his car. Again, I'm not a professional marksman, but I don't think this is a BB gun. I have a feeling this gun can do some damage to adult elephants. By the way, this weapon has been encountered in numbers in Iraq.
Authorities also found three magazines loaded with 7.62 x 39 mm cartridges in his car. I'm not familiar with these rounds, but I do know I don't want to get hit by one.
Bullet impacts were found on the second and third stories of the White House, which are the residence floors of the First Family. Did he know the windows to target?
How was it possible for a reportedly mentally challenged person to fire multiple high-caliber rounds into the White House from Constitution Avenue and escape the immediate security area without being detained?
Earlier in the day before he fired on the White House, Ortega-Hernandez was stopped by police officers in Arlington, VA at around 11:00 AM. At the time, the officers asked to search his car but Ortega-Hernandez refused. The officers took photos of Ortega-Hernandez and allowed him to go on his way.
More facts will undoubtedly filter out as this case proceeds.

*UPDATE: Ortega-Hernandez has a child named Israel.