'Nightline' Daily Line, June 20: Two Hoax Calls Linked, Coast Guard Says

6:17 p.m. ET: The Coast Guard announced today that the hoax distress call made on June 11 by a man claiming to be the captain of a yacht that exploded off the coast of Sandy Hook, N.J., was linked to another hoax call made in Texas on May 20.

Both calls came from a land-based radio, both specifically contacted a specific Coast Guard radio channel, and both came over a VHF frequency.

The rescue effort in Sandy Hook cost more than $85,000. "Nightline" took a look at other costly (and bizarre) pranks. Watch it HERE:

4:36 p.m. ET: Country music superstar Kenny Chesney gave "Nightline" producer Nikki Battiste a guitar lesson during a "Nightline" shoot on a sound stage in Nashville.

Credit: ABC News

"Nightline" anchor Cynthia McFadden spoke with Chesney about his incredible success in music, his summer tour and his past. Read more HERE.

3:05 p.m. ET: ABC News' Neal Karlinsky tweets:

2:28 p.m. ET: Critics say too often, at prisons across the country, convicted killers pass the time playing dominos and basketball, use well-stocked commissaries selling snacks and sodas, and enjoy state-of-the-art gyms, or time in the arts and crafts room.

So should lifers be allowed to enjoy perks in prison? Read our story HERE and then weigh in on our vote question:

1:13 p.m. ET: Talk about "terror on the airline" … JetBlue confirmed to ABC News that the captain of Flight 194 declared an emergency landing on Sunday because of a "mechanical indication" in the cockpit. Officials at Las Vegas' McCarran Airport said the aircraft had hydraulic problems in the air and had to return to the airport. The FAA is now investigating.

Read the latest on this bizarre story HERE

11:04 a.m. ET: ABC's Jim Avila, who is covering the Sandusky trial for the network, reports that Jerry Sandusky will not take the stand.

Sandusky was willing to testify in his own defense, but his lawyers overruled him today and decided that Sandusky would not testify.

Read the full story HERE.

Credit: Getty Images

9:39 a.m. ET: Oppressive doesn't begin to describe the heat in the Northeast today. Already, 13 states along the East coast are under a heat advisery until tomorrow. Here's how 'GMA's' weatherman Sam Champion laid it out: