Peyton Manning of the Denver Broncos on his 16th season-opening game against the Baltimore Ravens, what to expect, his preparation, the fans, and butterflies. Peyton Manning enters 16th NFL season with rematch at Denver Broncos practice...

Peyton Manning of the Denver Broncos warming up and practicing for the first game of season against the Baltimore Ravens Thursday night Peyton Manning practicing for Baltimore Ravens gam at Denver Broncos practice facility on September...

Peyton Manning just got out of the cold tub for his post-game press conference after the Oakland Raiders game and he wasn't overly impressed with his record-setting touchdown pass performance. Peyton Manning press conference after...

Denver Broncos practice for game against New York Giants and battle of quarterback Peyton Manning against his brother Eli Manning. Broncos practice for Week 2 against Giants at Denver Broncos practice facility on September 11, 2013 in...

Peyton Manning talks about playing against his brother Eli Manning and that there will be a moment he will reflect on the occasion during pregame but after the game starts that's his focus Peyton Manning on playing against his brother...

Denver Broncos offensive coordinator Adam Gase working with quarterback Peyton Manning in his first season in that coaching role. Broncos coordinator Adam Gase and Peyton Manning at Denver Broncos practice facility on August 15, 2013 in...

Action from Denver Broncos training camp featuring Peyton Manning and running backs Denver Broncos training camp at Denver Broncos practice facility on July 31, 2013 in Englewood, Colorado (Footage by Denver Post via Getty Images)

Peyton Manning of the Denver Broncos talks about practicing, noisy fans in Seattle, Von Miller and the Direct TV ad he made with his brother Eli. Peyton Manning weekly interview at Denver Broncos practice facility on August 15, 2013 in...

Peyton Manning at the 13th Annual ESPY Awards Arrivals at the Kodak Theatre in Hollywood, California on July 13, 2005. (Footage by WireImage Video/Getty Images)

Dane Cook on Peyton Manning Future at Roosevelt in Hollywood. 3/7/12 (Footage by WireImage Video/Getty Images Entertainment Video)

Peyton Manning press conference after first day of Denver Broncos training camp Thursday, July 25, 2013 Peyton Manning press conference Denver Broncos at Denver Broncos practice facility on July 25, 2013 in Englewood, Colorado (Footage...

Peyton Manning signs for fans outside of the Late Show with David Letterman in Celebrity Sightings in New York, 05/05/2014

Peyton Manning press conference prior to game against Tom Brady and the New England Patriots. Peyton Manning prepares for Patriots and Tom Brady at Denver Broncos practice facilithy on October 20, 2013 in Englewood, CO (Footage by Denver...

Peyton Manning and running back Ronnie Hillman at OTAS Peyton Manning and Ronnie Hillman at Broncos practice facility on June 06, 2013 in Englewood, CO (Footage by Denver Post via Getty Images)

The Denver Broncos spent $35 million to construct an indoor practice facility to use in the event of bad weather. A severe cold snap in November of 2014 had them practicing inside for several days.

Denver Broncos fans routinely pack the practice facility for training camp practices, getting autographs and cheering on the team during the early days of the season when the team allows them access.

Peyton Manning practicing during Denver Broncos training camp 2015. The 39-year-old quarterback is entering his 16th season in the NFL and fourth with the Denver Broncos.

Demaryius Thomas was found dead in his suburban Atlanta home.

AP Entertainment

New Orleans, 2 Feb.
2013
1. Medium of actor Alec Baldwin walking pas
t cameras
2. Reverse angle of Baldwin walking
the red carpet
3. Talk show host Craig...

HEADLINE Players approve deal to end NFL lockout

CAPTION: The NFLPA voted to approve a final deal Monday, days after the owners approved a tentative agreement, and the sides finally managed to put an end to the more than 4-month...

HEADLINE: Week 11: Vikings, Colts and Saints win

CAPTION: Brett Favre completed 22 of 35 passes in Minnesota's win over Seattle. The Colts stayed unbeatean by edging Baltimore. New Orleans is also unbeaten after a rout of Tampa...

The National Football League saluted its best players, performances and plays from the 2013 season on Saturday, February 1st, during the "3rd Annual NFL Honors" awards show at Radio City Music...

HEADLINE: Broncos fans welcome Manning, wonder about Tebow

CAPTION: Broncos fans were excited by the news that free agent quarterback Peyton Manning was reportedly negotiating a contract with the team. The AP caught up...

HEADLINE: Peyton talks 'ducks', Lynch barely speaks

CAPTION: While Denver Broncos quarterback Peyton Manning talked about throwing 'ducks', Seattle Seahawks running back Marshawn Lynch was barely talking...