Yes. F-18s and MV-22 Ospreys are super low tech, as are the various shaped high explosives and anti-tank weapons we run around with, never mind the mini drones, satcoms, GPS units, laser designators and gods knows what else they're loading us down with these days (NVGs and PEQ3s are my favorites, night vision + infrared bore sighted laser = all sorts of fun.) You'd also be remiss to call a lot of those sniper rifles low tech. The level of precision machining that goes into say, an Accuracy International .338 Lapua Platform is astonishing, and do represent the razor's edge in precision firearms manufacturing and ballistics. Side note, don't let Caspian Sea Monster hear you call the M16/AR platform low tech, she'll give you an earful about that particular design.
It's taken 30 years to get to that stuff in the testing and field operational sense because that's quite literally how far ahead of the curve the United States is tech wise. For fuck's sake the Gerald Ford class of super carriers is replacing the faithful steam powered catapult with an electromagnetic variant, meanwhile our closest rivals are using fucking SKI JUMPS. For suck's sake look how stupid this is:
Never mind the significant military disadvantages the STOBAR design has vs. CATOBAR.
Radar, GPS, Much, if not all modern emergency medicine and trauma care, a wide variety of exciting new alloys and metals, pretty much the whole of modern aviation and a good chunk of our spatial advances, satellite communications as previously mentioned, a bunch of things no one gets excited about any more involving radio, nuclear energy, massive advances in photography and photo imaging, a good chunk of modern computing AND of course, last but not least, the internet in it's base concept, all courtesy of the United States Department of Defense.
And expensive flops
REALLY expensive flops
Then there's the JSF.
Welcome to science and technology? Not like this is anything new, especially in Aerospace. Hell the MV-22 Osprey killed a fair number of people, but that's the risk of pushing the envelope. Accidents can and will happen, and the resulting aircraft is a revolutionary design that's completely overhauled how we approach medium lift capacity. The procurement program's totally fucked though. I till however point out that the desperately needed JSF VTOL model is working just fine. Apparently the Carrier variant did excellent at it's first sea trials and impressed the hell out of the F-18 drivers putting her through her paces. The Harrier pilots love the B, but then, the Harrier's so old
However, we're way off course.