It's turning out to be a soggy day here in Mankato.

The skies opened up a little bit during the morning walkthrough, and the Vikings scurried through the rest of the walkthrough before seeking shelter. We'll see if Mike Zimmer wants to set the tone by practicing outside -- assuming it keeps raining -- or if he wants to play it safe and practice inside. They will be in shells, after all.

After the walkthrough, defensive coordinator George Edwards and offensive coordinator Norv Turner both stopped inside the media tent. Both are good talkers who often give insightful answers. And they both delivered when asked about competitions at a couple of critical areas.

Edwards opened his news conference by talking about how he is looking forward to finding out the answers to some of the many unanswered questions that met the Vikings in Mankato. A couple of those questions are who will start at linebacker and where will they even be playing?

"We're rotating a lot of different guys in a lot of different areas," Edwards said. "We still haven't said that this guy is at this position or this guy's the MIKE or this guy's playing the SAM outside linebacker. So right now, this will be a process as we keep going through camp. … We like the competition. We like the guys that we've got. And we know it will work itself out in the end."

Edwards said the coaching staff has an idea of which linebackers will play which linebacker position, but he said the competition at the MIKE -- aka middle linebacker -- will be more complicated because whoever mans the position will be asked to do a lot of different things, from run blitzing to dropping into coverage to cover backs or tight ends. The mental aspect is also significant.

"We think we've got a good group of MIKE linebackers," he said. "We just want to see who will come to the top, competition-wise, and win out the position. Going into camp, that's what you want as a coach. You want things to be unsettled so guys go out there and work hard every day."

Things appear to be settled, at least for now, along the offensive line. The Vikings return a group of five linemen -- from left to right, Matt Kalil, Charlie Johnson, John Sullivan, Brandon Fusco and Phil Loadholt -- who have been together since the 2012 season. Turner acknowledged that continuity can be beneficial on the offensive line, but that doesn't mean he is averse to making changes.

"Playing together helps, but obviously in this league you have to plug young players in," he said. "So if a young player steps up and is capable, then that's not going to be a deterrent to keep him from playing. But again, those five guys, I'm very confident that they can play at a high level."

As Edwards said several times during his podium session, we'll learn more about the players in all camp competitions starting tomorrow, when the Vikings are full pads for the first time this summer.

Hopefully it will stop raining by then.