John R.
Yelp
It is a strange place to visit. Though the equipment is dated it looks like it could still be in service today. It is a masterful collection of engineering that came together to build a place that would service the Cold War need for years. The W-53 had a yield of 9 megatons and the Titan you get to visit was only one of numerous ones that were a part of this overall complex. As described in the tour, these were city busters. Though designed as bunker busters they could be used to level ALL the buildings in cities as large as New York, which is incomprehensible power. Their actual targets have never been disclosed even since their retirement in the late 80s.
The tour guides are amazing and yes, two people from whatever group you are in get to turn the keys to "launch" the missile, simulating what would be an actual test run when this place was in operation.
Today the land based launch systems are still a part of the triad. Their payloads may be smaller but their accuracy and delivery capability make them just as effective. It took a special crew to man them then, and I am sure the same is true for today for wherever they are now.
Though I took the plain vanilla tour you can book on the website it seems like there might be extended versions available too. Unless this information is stale you could try to look up:
Another 90-minute extended version of the regular tour entitled "Beyond the Blastdoor" adds a visit to the crew's living quarters above the launch control centre and in particular a trip down to level 7 at the bottom of the missile for a cool look up - you'll be taken down in batches in the silo's own elevator. These tours take place every first and third Saturday of the month; again, numbers are limited to a maximum of 20 participants and you have to reserve a place in advance (same contact details).
The "Top to Bottom" tours are the most comprehensive. In addition to the regular stops you'll see all levels of the silo, including the launch duct under the missile and all levels of the launch control centre as well. Numbers are limited to six participants, who must be able to climb 15-foot ladders and fit through 2-foot-wide hatches. These tours that last ca. four and a half hours require not only reservation but also pre-payment (non-refundable). They are offered according to a special schedule between two and three times a month. On request, these tours can also be arranged on a private basis on other dates than the scheduled ones (for an extra fee, if you can't make the group size of six, naturally).