5 Things to Know This Morning

March 22, 2013— -- Your look at the five biggest and most buzz-worthy stories of the morning.

1. 3 Marines, Including Suspect, Dead in Shooting
Three marines were killed during a shooting at Marine Corps Base Quantico, according to Lt. Agustin Solivan. The shooting began around 11 p.m. Thursday night.

2. Driver in Texas Shootout May Be Colorado Murder Suspect
Authorities are investigating a possible link between a man shot by police in Texas on Thursday and this week's murder of Colorado prison chief Tom Clements. Authorities tell ABC News they are also investigating whether the suspect may have been involved in the killing of a Denver Domino's pizza driver.

3. Man Arrested for Impersonating Pilot
A man who posed as an Air France pilot was removed from a plane at Philadelphia International Airport. The man reportedly boarded the plane on Wednesday night and attempted to sit inside the cockpit wearing the fake uniform.

4. Massive Canadian Crash Sends More Than 100 to Hospital
A chain reaction pileup involving hundreds of vehicles on a snowy highway in Canada sent more than 100 people to area hospitals. They all sustained minor to serious injuries.

5. Pepsi Introduces New Bottle Shape
Pepsi is introducing a new bottle shape for the first time in 16 years. The soda giant's new 16 and 20 oz plastic bottles, which will hit store shelves in April, will feature a "swirled grip" to make it easier to hold.