was on day one. >> we have been able to answer the question of who, what, when, where, and how. what we have not been able to definitively answer is the why stephen paddock committed this act. >> paddock open fire from the 32nd floor of the mandalay bay hotel, killing 58 people attending a concert. he spent several days bringing in an arsenal of weapons and ammunition to the hotel but as seen on the security camera footage cover nothing about his luggage caused alarm among hotel employees. while he had complained to friends about feeling constantly in pain or fatigue and his doctor described him as "odd and possibly bipolar," nothing about his behavior raised any red flags. >> by all accounts, stephen paddock was an unremarkable man. 's movements leading up to october 1st didn't lead to any suspicion. an interview with his doctor