"Police at Amsterdam's Schiphol Airport say they still do not know how needles got into turkey sandwiches on Delta Air Lines flights from Amsterdam to the United States, but are investigating," The Associated Press reports.

As The Wall Street Journal writes:

"I was just praying that I would get there and that if she [fell] that I would catch her," Steven St. Bernard tells CBS 2 TV in New York City.

Good morning.

Our early headlines:

-- Drought In U.S. Now Worst Since 1956; Food Prices To Spike, Economy To Suffer.

-- Pentagon Is Prepping Defenses Against Iran, 'Wall Street Journal' Reports.

Separate mass shootings at opposite ends of North America have left dozens wounded and at least two people dead.

Late Monday evening in Toronto, two people were killed and at least 19 others wounded in a shooting that "Police Chief Bill Blair called the worst in the city's history," The Globe and Mail writes. It adds that:

One of this morning's scoops, from The Wall Street Journal:

"The Pentagon is building a missile-defense radar station at a secret site in Qatar and organizing its biggest-ever minesweeping exercises in the Persian Gulf, as preparations accelerate for a possible flare-up with Iran, according to U.S. officials."

There's something new to prevent HIV infections.

The Food and Drug Administration on Monday approved a once-a-day pill that can drastically lower a person's risk of getting the virus that causes AIDS.

It's called Truvada — the first HIV prevention pill.

It's not cheap — around $13,000 a year — and it's not clear what insurers will pay for it. And there's worry that people taking the pill might relax safe-sex precautions.

Opening statements will be made Tuesday in the trial of a former Air Force instructor accused of rape and sexual assault of the young trainees in his care.

Staff Sgt. Luis Walker faces 28 charges and could be sentenced to life in prison. A total of 12 Air Force instructors are under investigation for allegedly abusing recruits at Lackland Air Force Base, the main Air Force training center.