5 Stories You May Have Missed This Weekend

Biden's 2016 plans; explosions at 2 churches; a father reunites with his son.

— -- 1. Joe Biden 'Not Saying No' to Potential Presidential Run

"He's not saying no," one adviser said. "This is his time to figure it out."

2. Rick Santorum Says GOP Debate Rules 'Arbitrary'

3. FBI Investigating Small Explosions at 2 Las Cruces, New Mexico Churches

No injuries were reported in either explosion, a Public Information Officer with the Las Cruces Police Department told ABC News.

The first explosion was reported shortly after 8 a.m. at a mailbox near an entrance to the Calvary Baptist Church, the Las Cruces police reported. Some people were inside the church at the time, but services had not yet begun, police said. The second came 30 minutes later, when an explosive device detonated in a trash bin outside the Holy Cross Catholic Church.

4. Watch Military Dad Surprise Son at Baseball Game After 6 Months in Kuwait

"I kept telling him middle of August," Amore told ABC News today.

So when Anthony, 8, was prepping for his baseball game Friday night, he had no idea his dad was already at the field, disguised as the catcher.

5. New ‘Ghostbusters’ Cast Visits Patients at Boston Hospital

Lucky patients at Boston's Tufts Medical Center were greeted Saturday by some special visitors dressed in jump suits and carrying special "Ghostbusting" gear.