President Obama is sending his proposed $585 billion 2016 Pentagon budget to Capitol Hill on Monday. It consists of reams of documents, charts and tables that make it difficult for normal folks to understand. So let’s take a look at a single line item—the Air Force’s new bomber, for which the service is expected to seek about $1.5 billion next year—for insight into why Pentagon numbers don’t always add up. The new bomber—designed to augment, and ultimately replace, the nation’s aging fleets of B-52, B-1 and B-2 aircraft—is so new that it doesn’t even have a name yet, beyond the generic title Long Range Strike Bomber. But the highly-classified warplane already has a well-publicized price. The cost, the Pentagon has been saying since 2011, is $550 million per bomber.