Skip to content

MARS Associates

For Retirees of LM, ULA, and Legacy Companies

  • Home
  • About
    • About us
    • Officers & Directors
    • Policy Documents
    • MARS Overview
    • Website Team
  • Benefits
    • Overview
    • Dental Plans
    • Vision Plans
    • Hearing Aids
    • Medicare 101
    • VIA Benefits
    • MARS Local Discounts
    • LM Corporate Discounts – Effective 9/11/2023
  • Events
    • Calendar
    • Full Year Calendar
    • Special Activities
      • Special Event Planning Steps
    • Event Photos
  • Membership
    • Membership Renewal
    • New Member Application
    • Member Contact
    • Volunteer
    • MARS Logo Store
  • Clubs
    • Overview
    • Bridge Club
    • Car Club
    • Dinner Club
    • Golf Club
    • Hiking Club
    • Photography Club
    • LM Clubs & Leagues
  • Communications
    • MARS STAR
      • Archive
    • In Memoriam
    • What to do when your loved one dies
    • Subscribe / Unsubscribe from MARS Email Lists
  • History
    • On This Day
    • MARS Moments
    • Brief History of LM Denver
    • Martin Marietta Archives
  • Toggle search form

On this day – April 21

Posted on April 21, 2023April 20, 2023 By Barb Sande

The events on this day in history for our heritage companies are noted below:

The earliest events was in 1966, the latest event was in 1996

Human Spaceflight:

1969 – Space Shuttle Task Group formed at NASA HQ

Military and Classified Programs:

NONE

Exploration and Interplanetary Programs:

NONE

Earth-Monitoring and Civil Weather Satellite programs:

NONE

Commercial Programs:

NONE

Test, ICBM, FBM programs:

1966 – LAUNCH (3): Lockheed Polaris A3, SSBN643, ETR

1970 – LAUNCH (6): Lockheed Polaris A2, SSBN608, ETR

1978 – Undersecretary of Defense asks for a study to determine if a common missile could replace MM M-X and Lockheed Trident II

1980 – LAUNCH (4): Lockheed Poseidon C3, SSBN656, ETR

1996 – LAUNCH (2): LM Trident D-5, SSBN738, ETR

Other:

NONE

The photo today is an example of a Trident D-5 Fleet Ballistic Missile test in 2015.  On this day in history there were 15 test launches of various Fleet Ballistic Missiles, including Polaris A3, Polaris A2, Poseidon C3, and Trident D-5. 

151107-N-ZZ999-001 PACIFIC OCEAN (Nov. 7, 2015) A trident II D-5 ballistic missile is launched from the Ohio-class ballistic missile submarine USS Kentucky (SSBN 737) during a missile test at the Pacific Test Range. The launch, the 156th successful test flight of an unarmed Trident II D5 missile, was part of a Demonstration and Shakedown Operation (DASO) in the Pacific Test Range to validate the readiness and effectiveness of an SSBN’s crew and weapon system. (U.S. Navy photo/Released)
On This Day

Post navigation

Previous Post: On this day – April 20
Next Post: On this day – April 22

Related Posts

  • On this day – August 12 On This Day
  • On this day – June 6 On This Day
  • On this day – February 1 On This Day
  • On this day – January 29 On This Day
  • On this day – June 19 On This Day
  • On this day – August 17 On This Day

More Related Articles

On this day – November 30 On This Day
On this day – March 7 On This Day
On this day – July 5 On This Day
On this day – August 22 On This Day
On this day – April 22 On This Day
On this day – April 11 On This Day

About us

MARS Associates
PO Box 1128
Littleton, CO 80160-1128

Suggestion Box

Find us on Facebook

Copyright © 2023 MARS Associates