Electronic and electro-optical packaging is key to the effective use of electronics and optics in modern system applications. This issue of the Technical Digest examines APL’s current and future advances in packaging, which build on a more than 65-year history of developing innovative packaging solutions to challenging problems in space, under water, on sea and land, and in the air. Package structures range from the largest satellites and instruments to the smallest components (e.g., carbon nanotubes). The cover illustrates electronic circuit boards of various types fabricated at APL. The central image is our latest bendable packaging technology, which consists of thinned die on a flexible substrate with an overall thickness slightly larger than the diameter of a human hair.