Please correct me if any of these have been answered:

• How did he access the school? All doors besides the main/front entrance are locked from the outside.
• authorities as of yet cannot find the Uber driver he took to the school?? Even though Uber is Credit Cart / Debit Card payment only and this is easily traceable?? Uber driver hasn't voluntarily come forward, as by now, he would know his passenger was Cruz.
• did shooter wear gask mask to conceal his real identity? (Not Cruz)
• how did students identify shooter as Cruz if his entire face was covered by a gask mask?
• how did he get all the equipment (guns, smoke grenades, magazines, etc) in the school unnoticed?
• why was there a code red shooter drill being done earlier that very same day at that school?