Modernizing the North American Air Defence System | The Brian Mulroney Institute of Government

Warning: Undefined array key "#entity_type" in ds_preprocess_ds_layout() (line 634 of modules/contrib/ds/ds.module).

ds_preprocess_ds_layout(Array, 'ds_1col', Array)
call_user_func_array('ds_preprocess_ds_layout', Array) (Line: 285)
Drupal\Core\Theme\ThemeManager->render('ds_1col', Array) (Line: 445)
Drupal\Core\Render\Renderer->doRender(Array) (Line: 458)
Drupal\Core\Render\Renderer->doRender(Array) (Line: 458)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 204)
Drupal\Core\Render\Renderer->render(Array) (Line: 474)
Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 130)
__TwigTemplate_401609867fea66add01e78685198e655->block_content(Array, Array) (Line: 171)
Twig\Template->displayBlock('content', Array, Array) (Line: 65)
__TwigTemplate_401609867fea66add01e78685198e655->doDisplay(Array, Array) (Line: 394)
Twig\Template->displayWithErrorHandling(Array, Array) (Line: 367)
Twig\Template->display(Array) (Line: 379)
Twig\Template->render(Array, Array) (Line: 40)
Twig\TemplateWrapper->render(Array) (Line: 53)
twig_render_template('themes/mantini/templates/content/node.html.twig', Array) (Line: 372)
Drupal\Core\Theme\ThemeManager->render('node', Array) (Line: 445)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 204)
Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 592)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 239)
Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 191)
Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)

Modernizing the North American Air Defence System

During the mid 1980s, the Government of Canada and the United States Government began making advancements to modernize to the former North American Air Defence System (consisting of the Distant Early Warning or the DEW line).
These modernization discussions recognized the obsolescence and inadequacies of the current technologies in fulfilling its defence responsibilities, and began the process of creating what is now known as the North Warning System.
The North Warning System was later built between 1986–1992 and replaced the DEW line with more advanced technology.

Citation

Canada. Treaty. Exchange of Notes Constituting an Agreement Between the Government of Canada and the Government of the United States of America on the Modernization of the North American Air Defence System. [Quebec], 1985. https://www.treaty-accord.gc.ca/text-texte.aspx?id=101003