How to improve writing (no. 83)

In The New York Times tonight:

Speaking to a rain-soaked audience behind bulletproof glass, Mr. Trump spent most of his time recounting the history of the armed forces.

An added preposition makes things right:

Speaking to a rain-soaked audience from behind bulletproof glass, Mr. Trump spent most of his time recounting the history of the armed forces.

See the difference?

Related reading
All OCA “How to improve writing” posts (Pinboard)

[This post is no. 83 in a series, dedicated to improving stray bits of public prose.]