Dan Campbell is urging the NFL to let coaches use sideline monitors to help them make the right calls.Technology has brought viewers closer to the action than ever before, but while fans and announcers can see every foot in bounds within seconds, playcallers are often in the dark.Campbell could try and rally support from other coachesGettyDetroit Lions boss Campbell wants that to change so he can keep track of all the “little things” which might make a big difference over the course of a season.Asked about a play which saw a Lions star injured during the preseason opener against the Cincinnati Bengals, the coach admitted he hadn’t caught the incident.“You get a better view than I do,” he said via Michael David Smith in Pro Football Talk. “I don’t get to see all that stuff.“I wish they’d just give us a monitor we can walk around with so we actually watch the game with you guys while we’re watching that game because you can’t see all the little things.”The biggest implication for Campbell and his rival coaches would be deciding when to throw the red challenge flag.Currently, assistants and staffers in the booth relay information from the television broadcast to help make the call.The NFL is looking to cut down on flags, and has offered head coaches the chance to delegate duties to another member of their staff in order to reduce heat-of-the-moment challenges.With great power comes great responsibility, and Campbell isn’t about to put somebody else in a situation where an error of judgement could cost the team.“No, I’m not giving that flag up to anybody. No way,” he said. “The buck stops with me anyway. “I’m answering the questions, so why would I give it to somebody else, for me to answer for somebody else? It all comes to me anyway. So that’s it.”Cambell has turned the Lions into contendersGettyThe Bengals won 16-14 in the openerGettyNFL coaches prefer to keep hold of red flagsNew England Patriots head coach Mike Vrabel has also said he’ll keep the flag.Judging by the impressive distance he got on one during his preseason opener, he clearly gets some satisfaction out of it.Many of his colleagues will feel the same and are unlikely to take the league up on its offer.View Tweet: https://t.co/ry01GYYQMHIf NFL execs really want to take the emotion out of flags, providing the men holding them with a monitor could be the way to go.Campbell was pleased with what he saw with his own two eyes as he looks to bounce back from propping up the NFC North despite a 9-8 record.“But, there was a number of guys I thought played really well and it was good to see. I think more than anything, especially for the young guys, you just want to know it’s not too much for them,” he said. “And for the guys that it is, OK, now let’s see how they respond. Was that a one-time deal? Or, it is a lot? But, it was good for the first outing.”NFL's Greatest......Ranking the top 10......Quarterbacks of all-time – Can anyone better Tom Brady?Wide receivers of all-time – Does Randy Moss or Jerry Rice come out on top?Running backs of all-time – Stacking Jim Brown, Barry Sanders, Walter Payton, Emmitt Smith and moreTight ends of all-time – How does Travis Kelce compare?