This is from CBS News:

6:11:21 – 6:11:32 p.m.: An officer walks around the building; people spot the shooter and start to flee
More videos show the chaotic moments before the shooting. Exactly 12 seconds before the first shot was fired, video shows an officer walking around the building.

Another video, which begins at 6:11:28 p.m. — five seconds before the first shot is fired — shows people yelling that the man on the roof has a gun. It shows people running to flee the gunman.

In yet another video, people are seen spotting the shooter at 6:11:29 p.m., exactly four seconds before he opens fire. It shows people yelling that the shooter is “right here.”

Video also shows the Secret Service snipers behind Trump pointing their rifles in the direction of the shooter. One sniper appears to spot something about one second before the first shot rings out.

6:11:33 p.m.: First shot fired

As Trump was talking about immigration, the first shot from the would-be assassin was fired.

6:11:34 p.m.: Two more shots fired
The second and third shots from the sniper came one second later. All three shots came from Trump’s right.

6:11:37 p.m.: More gunshots heard
Three seconds later, several rapid gunshots are heard. At least three more shots were fired, followed by what sounded like an outgoing shot, as the crowd erupted into screams.

Video recorded by a member of the audience shows Secret Service snipers appearing to aim in the direction of the gunman. A final shot is heard 15 seconds later.

6:11. Is that a message to us?

Ephesians 6:11-17:

11 Put on the whole armour of God, that ye may be able to stand against the wiles of the devil.

12 For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places.

13 Wherefore take unto you the whole armour of God, that ye may be able to withstand in the evil day, and having done all, to stand.

14 Stand therefore, having your loins girt about with truth, and having on the breastplate of righteousness;

15 And your feet shod with the preparation of the gospel of peace;

16 Above all, taking the shield of faith, wherewith ye shall be able to quench all the fiery darts of the wicked.

17 And take the helmet of salvation, and the sword of the Spirit, which is the word of God: