League Two leaders Gillingham knocked League One side Scunthorpe out of the FA Cup with an easy win at Priestfield.
The Gills went ahead when Matt Fish finished after Sam Slocombe could only parry Chris Whelpdale's curling effort.
Deon Burton headed in from Myles Weston's cross for 2-0 before Danny Kedwell's penalty, after Josh Walker's foul on Danny Jackman, made it 3-0.
Adam Birchall bundled in a late fourth as Brian Laws's third spell in charge of Scunthorpe began with a heavy loss.
Gillingham had gone into the match knowing little about their opponents as scout Russ Wilcox, who had been studying the Iron for the Gills,
joined Scunthorpe's staff on Friday.
VIEW FROM THE DRESSING ROOM
Gillingham manager Martin Allen told BBC Radio Kent:
"I'm very proud. We expected them to be hard to beat, and hard to break down, but in the second half we had far too much passion, power, pace, quality. We played some great football.
"Once we got the ball moving around, there was only going to be one winner.
"Their first chance was in the 88th minute, which tells you a lot about the people we've got in our squad."
Gillingham 01 Nelson 02 Fish 11 Jackman 15 Davies 18 Dack (Lee - 21' ) 26 Barrett 30 Vincelot 04 Payne 07 Whelpdale 24 Weston (Birchall - 79' ) 20 Burton (Kedwell - 71' ) Substitutes 21 Forecast 12 Frampton 08 Lee 16 Montrose 09 Kedwell 10 Strevens 17 Birchall Scunthorpe United 01 Slocombe 02 Ribeiro 05 Mirfin Booked 06 Reid Booked 21 Newey 04 Walker 16 Duffy 19 Collins Booked (Mozika - 70' ) 10 Grella (Jennings - 78' ) 11 Barcham (Ryan - 78' ) 22 Hawley Booked Substitutes 13 Severn 03 Kennedy 15 Canavan 07 Ryan 08 Mozika 14 Gibbons 12 Jennings