Impeachment trial Day 4: How to stream or watch Trump’s Senate hearing

Former President Donald Trump faces his second impeachment trial in a year, a historic moment.

James Martin/CNET

The second impeachment trial of former President Donald Trump continues Friday with Trump’s lawyers presenting their case on a platform of free speech. The trial is proceeding at an accelerated rate and a vote could come as early as Saturday.

The impeachment managers who serve as prosecution concluded their presentations on Thursday that Trump willfully incited the violent attack on Capitol Hill Jan. 6. Graphic, newly released footage depicted the attack on the Capitol, including clips from security cameras showing members of Congress running away from people wielding firearms, baseball bats and riot shields after the mob shattered windows, beat down doors and attempted to hunt down specific members of Congress and former Vice President Mike Pence.

The defense has argued that the trial is unconstitutional because Trump is no longer a sitting president. Trump rejected the request to testify under oath either before or during the Senate trial.

On Friday, it’s the defense’s turn.

Trump is the first president in US

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New 3-D-printed antenna designs reduce cost, weight and size

Anna Stumme, U.S. Naval Research Laboratory electrical engineer makes adjustments to an array inside the anechoic chamber at the U.S. Naval Research Laboratory in Washington, D.C., Sep. 5, 2019. Stumme creates and tests prototype parts developed using traditional and 3D printed methods. Credit: Photo by Jonathan Steffen

U.S. Naval Research Laboratory experts created and tested 3-D-printed antennas and arrays to advance radar technology and enable new applications for the U.S. Navy.

The lightweight and rapid production of 3-D-printed parts make it an attractive alternative to traditional manufacturing that often requires expensive materials and specialized equipment.

“3-D printing is a way to produce rapid prototypes and get through multiple design iterations very quickly, with minimal cost,” said NRL electrical engineer Anna Stumme. “The light weight of the printed parts also allows us to take technology to new applications, where the heavy weight of solid metal parts used to restrict us.”

Radar systems perform critical functions for the Navy, and remain an important part of maritime navigation and national defense. Parts for antennas and arrays, which are multiple connected antennas working together as one, may unexpectedly break or wear out requiring replacement. Traditionally, parts are ordered or intricately machined out of metal,

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