article_snippet.sent: But Lubitz's illness didn't just appear out of thin air.  
article_snippet.sent: Lubitz's illness effects had to be apparent to others.
article_snippet.sent: Lubitz's girlfriend made Lubitz's girlfriend concerns public knowledge -- unfortunately after events took their course.
article_snippet.sent: Considering the hoops Lubitz had to jump through to have established Lubitz as a Germanwings co-pilot, it's curious to me how the red flags of Lubitz were missed.
article_snippet.sent: Lubitz had barely over 600 hours of flight time when Lubitz committed Lubitz act of horror.
article_snippet.sent: According to reports, Lubitz took a leave from Lubitz training -- a very untypical behavior.
article_snippet.sent: In that regard, I find it difficult to believe that none of Lubitz's colleagues made a less than positive assessment at some point in time.