The #614 was delivered to the C&O in 1948, and was kind of an odd order, since it was deep in the waning days of steam but C&O went all-out with basically every option (they weirdly skipped on a feedwater heater and went with a Hancock exhaust steam injector) to make a state-of-the-art locomotive. After just four years of service, the C&O placed it, and it's sisters, into storage, rendered surplus by the arrival of diesels. After four years of storage, the #614, and sister J-3a #610, were pulled out of storage to handle a traffic surge. C&O was also leasing some RF&P power to handle the spike, and one of the leased RF&P engines was 4-8-4 #614, so to avoid confusion, a paint brush and chisel were taken to C&O #614 to renumber it to #611. It's revival lasted one year, giving it a total of five service years, and then the #614/#611 was placed in storage, and then eventually donated to the B&O Railroad Museum, still as #611.
In 1975, Ross Rowland had grabbed Reading T-1 #2101 out of a scrapyard in Maryland and put it back in service in 30 days to handle the northeastern leg of the American Freedom Train. After that was over, Rowland had talked Chessie Systems into hosting a series of steam excursions using the #2101, called the Chessie Steam Specials. They ran in 1977 and 1978 and were very successful, and Chessie Systems was planning to host them again in 1979. The #2101 was stored at Chessie's Silver Grove, KY roundhouse over the winter and the roundhouse ended up catching fire and burning down. Rowland and Chessie Systems determined that the #2101 was "irreparably damaged" by the fire and decided to park the #2101 and a deal was struck to cosmetically restore it to it's AFT appearance and trade it to the B&O Railroad Museum for C&O #611/#614. In more recent years, Rowland has admitted that the #2101 was likely salvageable but the fire served as a good excuse to get rid of the #2101; Chessie Systems wanted something from one of their own lines, and the #2101's solid bearings had always been a trouble spot and Rowland wanted something with roller bearings.
After 18 months of work, the #614 was fired back up. Along with an operational restoration, it was returned to it's original number and had it's tender internally modified to carry significantly more coal (it's easier to find and take on water than coal, and you can just run auxiliary tenders and pump the water forward in motion). It ran the renamed Chessie Safety Express all over the Chessie System during 1980 and 1981, and then Chessie Systems ended the excursions and the #614 was back out of work The #614 was placed in storage at the old Western Maryland roundhouse in Hagerstown and there it sat until 1985.
In 1985, in response to high diesel fuel costs and stable coal prices, the American Coal Enterprises launched the ACE-3000 project to develop a modern, efficient steam locomotive for mainline freight hauling. The #614 was a late design that was reported to be very efficient, and was all restored with nothing to do, was taken out of storage and renumbered to #614T (T for Test), fitted with a bunch of data collection systems, and ran on the Chesapeake & Ohio hauling freight trains. Again in his vague, handwave-y way, Ross Rowland has long proclaimed that the data gather was "very surprising" but has never elucidated what those results were, but dropping fuel prices and backroom politics at ACE killed the program and the #614 was parked that same year.
In 1992, the #614 was moved back to the B&O Railroad Museum for display, while Ross Rowland pitched his idea for the 21st Century Limited, a traveling exhibit that would contain hundreds of examples, artifacts, and illustrations of the challenges faced by the people of the 20th century, and how those challenges were met and overcome. To give the public an idea of the train, one side of 614 was decorated in a futuristic way with a blue streamlined shrouding and centered headlight, and there was talk of also restoring NYC 4-8-2 #3001 to assist in pulling the train. Plenty of corporate sponsors, including Chrysler, signed on, but the project ultimately fizzled when it became apparent that there wasn't enough time to build and launch the train by 1996. The #3001 restoration never went beyond an initial investigation, and the #614 moved around the B&O Railroad Museum under it's own power a couple time in it's new appearance, but that was about it, and it was quickly returned to it's original appearance.
In 1995, with the 21st Century Limited visibly dead in the water, it was moved to the New Hope & Ivyland for an overhaul, and Rowland began talking with NJTransit about running excursions over their rails. After the disastrous 1988 NRHS Convention, some of which ran on NJT rails, NJT wanted nothing to do with the idea originally. He then pointed out that they had a proven engine with no records of mechanical failures and that he had run mainline excursions for decades without any major debacles. NJTransit was eventually warmed up to the idea, but insisted that the locomotive had to have cab signals, automatic train stop systems, an MU stand for controlling diesel helpers from the cab of the #614 and a modern brake stand. The #614 underwent serious work at the Port Jervis shops to add all these features, resulting in much cursing from the NJT shops crews reportedly, and emerged ready to run again in 1996. From 1996 to 1998, it hauled a number of excursions between Hoboken and Port Jervis, which were well-run but ultimately ended by NJT over insurance prices. There were also disputes between Rowland and NJT over him exceeding track speed limits that also resulted in a breakdown in the partnership. This was the last time the #614 ran, and it was moved over to the Reading & Northern and placed in storage at Port Clinton.
Rowland tried to auction it off in 2000, but no one managed to place a sufficiently high bid. Andy Muller, president of the R&N, also tried to make a private deal with Rowland, which would have given the #614 a terrific home and place to stretch it's legs, but Rowland's asking price was said to be too high. In 2007, Rowland kicked off planning for his Yellow Ribbon Express, another exhibition train in the vein of his 1969 Golden Spike Limited and the 1976 American Freedom Train, which was supposed to be pulled by the #614 and tour the US from 2017 to 2020 raising money for the veterans of post-2001 conflicts. Issues with funding and the reluctance of Class Is to host steam excursions, as well as general logistical problems, meant it was a non-starter, and the whole project died a quiet death. Then, in 2010, Rowland and Jim Justice, owner of the Greenbrier Resort in White Sulfur Springs, West Virginia, and then-governor of West Virginia, entered into talks for the Greenbrier Presidential Express, a luxury steam train hauling people from Washington D.C. to the Greenbrier Resort. In May 2011, the 614 was moved to the C&O Railway Heritage Center in Clifton Forge and repainted in green paint and relettered in preparation for the proposed service. The project was canceled in May 2012 due to lack of funding, CSX's strong stance against steam locomotives on their rails, and capacity problems on the CSX portion of the route, where a lack of passing sidings would make it difficult for eastbound trains to gain headway against the flow of westbound empty coal trains. The #614 has sat there, in the green paint and lettered for the stillborn service ever since. Rowland still talks about doing an American Freedom Train 2.0 in 2026, but the idea doesn't seem to be rooted in any version of our reality, ignoring the lack of display sidings, the government not wanting to move rare and important artifacts around the country, Class Is stances towards steam and special moves, and the fact that he hasn't had a success in almost thirty years, his last big cross country trip was in '76, and that he has made a number of eyebrow-raising public statements that have made even diehard railfans turn away from him. He has even admitted that no one at the White House has been taking his phone calls, and with the semi-quincentennial in 2 years, I think he's out of planning time.